801
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Tang X, Wang H, Brandt AS, Woodson WR. Organization and structure of the 1-aminocyclopropane-1-carboxylate oxidase gene family from Petunia hybrida. PLANT MOLECULAR BIOLOGY 1993; 23:1151-1164. [PMID: 8292780 DOI: 10.1007/bf00042349] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In this paper we present the structural analysis of the 1-aminocyclopropane-1-carboxylate (ACC) oxidase gene family from Petunia hybrida. Southern blot analysis and restriction endonuclease mapping showed that two cloned regions of the petunia genome contained sequences highly homologous to a previously isolated ACC oxidase cDNA clone. Nucleotide sequencing of these two regions of the genome showed that each contained two tandemly arranged genes designated ACO1, ACO2, ACO3 and ACO4. Comparison of the nucleotide sequences of the cloned genomic regions with the cDNA clone pPHEFE indicated that ACO1 encoded the transcript in 4 exons interrupted by 3 introns. The other three members of the petunia ACC oxidase gene family shared identical intron numbers and positions with ACO1 and their exons were greater than 80% homologous. Nucleotide substitutions and deletions in the ACO2 gene indicate that it likely represents a pseudogene. Overall homology between ACO1 and ACO2 indicates that this gene cluster arose by a more recent duplication event than the gene duplication giving rise to the ACO3 and ACO4 cluster. The 5-flanking sequences share little overall homology between members of this gene family. However, sequences which likely make up the core promoter of these genes including the TATA box are highly homologous. RNA-based PCR amplification of ACC oxidase cDNAs from ethylene-treated corollas and wounded leaves revealed transcripts for ACO1, ACO3 and ACO4 indicating that a least three of these genes are transcriptionally active. The proteins encoded by ACO1, ACO3 and ACO4 share more than 90% identity with one another and more than 70% identity with ACC oxidases from other species. The ACC oxidase proteins share significant sequence homology with other enzymes that require Fe(II) and ascorbate for catalytic activity.
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802
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Tang X, Wang Y, Nakata Y, Li HO, Fujita A, Gao H, Sarai A, Yokoyama K. A mathematically designed STS primer without any mismatches for direct sequencing of cosmid DNA clones. THE JAPANESE JOURNAL OF HUMAN GENETICS 1993; 38:381-90. [PMID: 8186415 DOI: 10.1007/bf01907984] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We report here a new method for the direct sequencing of large DNA inserts of cosmid clones from human chromosomes using STS primers of 14 nucleotides without any mismatches, which are designed from results of a mathematical analysis. It is clear that STS primer of 14 nucleotides is optimum for direct sequencing of cosmid recombinant DNA clones. We also provide examples of direct sequencing of cosmid clones of human chromosome 21 using these STS primers.
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803
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Tang X, Huang C. [Quantitative study of transmitral flow by spectral Doppler echocardiography]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1993; 24:405-8. [PMID: 8150443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The aim of this study is to find an accurate and simple method for measuring the transmitral flow by pulsed Doppler echocardiography (PDE). Four parameters were measured: (1) anteroposterior dimension of the mitral valve annulus (MVA) (a); (2) mediolateral dimension of MVA (b); (3) a and b of MVA to calculate the area of MVA (elliptical method); (4) the area of the mitral valve orifice (MVO). The transmitral flow calculated by the use of (3) and (4) were compared with the aortic blood flow. The findings suggested that the MVA calculated with elliptical method is accurate and simple in measuring the transmitral flow.
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804
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Tang X, Muramatsu Y, Yajima M, Sonoda T. Endometrium-myometrium ratio: a newly proposed diagnostic parameter on magnetic resonance imaging assessment of myometrial invasion by endometrial cancer. Jpn J Clin Oncol 1993; 23:278-83. [PMID: 8230752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
In order to improve the accuracy of magnetic resonance (MR) imaging assessment of myometrial invasion by endometrial cancer, the usefulness of a new diagnostic parameter, the endometrium-myometrium (EM) ratio has been evaluated. EM ratio is the proportion of the widest length of endometrium to the length of myometrium measured at the same line, this being vertical to the parallel of the long axis of the uterine body in the sagittal plane of the MR images. Myometrial invasion was defined as a value of the EM ratio > 1, and the tumor was limited to the endometrium for values < 1. In 25 consecutive patients, both the EM ratio-based assessment and the well-established junctional zone-based assessment with T2-weighted MR imaging and enhanced MR imaging with gadolinium diethylenetriamine pentaacetic acid (Gd-DTPA) were compared with the results from pathological examinations of postoperative specimens. In identifying myometrial invasion by endometrial cancer, the sensitivity of the EM ratio-based assessment was better than that of the junctional zone-based assessment. The overall sensitivity of the former was 96% in both the T2-weighted and enhanced MR imaging with Gd-DTPA, whereas that of the latter was 84% in the T2-weighted MR imaging and 72% (P < 0.05) in the enhanced MR imaging. The use of the EM ratio with MR imaging improves the ability to assess myometrial invasion by endometrial cancer.
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805
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Tang X, Weber J, Baer Y, Müller C, Hänni W, Hintermann HE. Influence of hydrogen on the structure of amorphous carbon. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:10124-10128. [PMID: 10007286 DOI: 10.1103/physrevb.48.10124] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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806
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Tang X. 75 cases of simple obesity treated with auricular and body acupuncture. J TRADIT CHIN MED 1993; 13:194-5. [PMID: 8246593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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807
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Tang X, Ye P. Calculation of the bit-error rate of optical soliton communication systems with lumped amplifiers. OPTICS LETTERS 1993; 18:1156. [PMID: 19823319 DOI: 10.1364/ol.18.001156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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808
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Heng Z, Wu D, Tang X. [Genotoxicity of herbicide 83-1 in yeast assay system]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1993; 24:97-100. [PMID: 8340103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The genotoxicity of Herbicide 83-1 (Dichloronitrophenolamide, DCNPA) was detected by the yeast D61.M and D7 assay with multi-endpoint. We noted that the frequency of cyhR (resistance to cycloheximide) colonies of D61.M treated with DCNPA on cycloheximide medium was much higher than that of the control (P < 0.01) and that there was a dose-response relationship. These showed that the positivity responsed to the mitotic crossing-over endpoint. To the remaining endpoints in the D61.M and D7 assay, however, the negative response was obtained. The results have demonstrated that Herbicide 83-1 is a DNA damage agent.
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809
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Nicklich W, Kumpfmüller H, Walther H, Tang X, Xu H, Lambropoulos P. Above-threshold ionization of Cesium under femtosecond laser pulses: New substructure due to strongly coupled bound states. PHYSICAL REVIEW LETTERS 1992; 69:3455-3458. [PMID: 10046826 DOI: 10.1103/physrevlett.69.3455] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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810
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Tanaka Y, Tang X, Hou DX, Gao H, Kitabayashi I, Gachelin G, Yokoyama K. Phenotypic conversion of SV40-immortalized human diploid fibroblasts to senescing cells by introduction of an antisense gene for SV40-T antigen. Cell Struct Funct 1992; 17:351-62. [PMID: 1338304 DOI: 10.1247/csf.17.351] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Normal human lung fibroblast diploid cells, WI-38, become senescent after a definite number of divisions. VA-13 is a line of immortalized cells established by transformation of WI-38 cells by SV40 virus. To determine whether SV40 large T (SV40-T) antigen is essential for this immortalization of WI-38 cells we introduced an antisense gene for T antigen into VA-13. Two morphologically different types of antisense transformant (VA-AS5-8 and VA-AS37-8) were obtained. In both antisense transformants the expression of T antigen was reduced by more than 70% as compared to that in the parent cells. The morphology of the antisense transformants indicated a partial conversion to the senescent phenotype of WI-38. The relative number of cells in the S phase of the antisense transformants was decreased as compared to that in cultures of VA-13 and about 50% of cells were at G1/0. The doubling time of the transformants was prolonged to close to the doubling time of WI-38. The level of expression of retinoblastoma protein (pRB) complexed with SV40-T antigen of the antisense transformants was significantly decreased although the level of total pRB was much higher than that in VA-13. The pRB was present exclusively in the underphosphorylated form. Thus, the decreased level of formation of the complex between SV40-T and pRB or the underphosphorylation of pRB may explain the suppression of growth of antisense transformants. Together, these results show that an antisense gene for SV40-T antigen can efficiently block the cell proliferation and the cell immortalization of VA-13 cells.
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811
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Yokoyama K, Hou DX, Gao H, Tang X, Kitabayashi I, Nishikura K, Gachelin G. Inhibition of expression of a mouse alpha-globin gene by plasmids that include antisense oligonucleotides. Cell Struct Funct 1992; 17:433-42. [PMID: 1295698 DOI: 10.1247/csf.17.433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Plasmid-borne DNAs, corresponding to 68-base oligodeoxynucleotides, synthesized in the antisense or sense configuration and based on the nucleotide sequences of various regions of the mouse alpha-globin mRNA, were introduced with the gene for xanthine-guanine phosphoribosyl transferase from E. coli (Ecogpt) into mouse erythroleukemia (MEL) cells by protoplast fusion. Specific inhibition of the synthesis of alpha-globin was observed only in the cells transformed with the plasmids with antisense 68-mers that corresponded to the cap site as well as the site of initiation of translation of alpha-globin mRNA (Oligo-A); Other plasmids with antisense 68-mers that corresponded to the regions of the exon/intron junctions, the individual exons, or the 3' untranslated region were ineffective. This antisense RNA efficiently reduced the production of alpha-globin to 9-18% of the endogenous level after induction with hexylmethylene-bis-acetoamide (HMBA). Moreover, most of the antisense transformants did not show any decrease in the expression of the c-myc gene at the early phases of differentiation of MEL cells. Thus, we propose a hypothesis that the early decline in levels of c-myc mRNA may be independent of and uncoupled from the program of globin synthesis during the differentiation of MEL cells.
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MESH Headings
- Acetamides/pharmacology
- Animals
- Base Sequence
- Cell Differentiation/drug effects
- DNA, Recombinant/genetics
- Gene Expression Regulation/drug effects
- Genes, myc
- Globins/biosynthesis
- Globins/genetics
- Leukemia, Erythroblastic, Acute
- Mice
- Models, Genetic
- Molecular Sequence Data
- Plasmids
- RNA Caps/genetics
- RNA, Antisense/pharmacology
- RNA, Messenger/biosynthesis
- RNA, Messenger/genetics
- Regulatory Sequences, Nucleic Acid
- Tumor Cells, Cultured
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812
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Tang X. [Veno-valvulectomy and primary in situ arteriolization of the great saphenous vein for the treatment of ischemic lower limbs]. ZHONGHUA WAI KE ZA ZHI [CHINESE JOURNAL OF SURGERY] 1992; 30:656-8, 698-9. [PMID: 1307291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
After the study of the valvular distribution of 18 cadaveric great saphenous veins, we performed microsurgically great saphenous veno-valvulectomy and primary in situ veno-arteriolization for 18 severely ischemic limbs of 17 patients of these patients, 14 had thromboangiitis obliterans, and 3 arteriosclerosis. 16 patients were followed up for 14 to 32 months after operations. The results were excellent. The procedure is a good alternative for the treatment of extensive arterial occlusive disease of the lower limbs.
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813
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Tang X, Yuan C, Zhang Z, Zhou M. [Chemical constituents of Bauhinia hupehara Craib]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1992; 17:613-5, 640. [PMID: 1294179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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814
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Chang TN, Tang X. Atomic-structure effects in multiphoton ionization of magnesium. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:R2209-R2212. [PMID: 9908467 DOI: 10.1103/physreva.46.r2209] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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815
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Xu H, Tang X, Lambropoulos P. Nonperturbative theory of harmonic generation in helium under a high-intensity laser field: The role of intermediate resonance and of the ion. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:R2225-R2228. [PMID: 9908471 DOI: 10.1103/physreva.46.r2225] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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816
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Tang X, Tashiro H, Eki T, Murakami Y, Soeda E, Sakakura T, Watkins PC, Yokoyama K. Generation of 19 STS markers that can be anchored at specific sites on human chromosome 21. Genomics 1992; 14:185-7. [PMID: 1358793 DOI: 10.1016/s0888-7543(05)80304-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sequence-tagged sites (STSs) are short stretches of DNA that can be specifically detected by the polymerase chain reaction (PCR) and can be used to construct long-range physical maps of chromosomal DNA. These STSs can be detected by PCR assays developed by reference to data obtained from the sequencing of restriction fragment length polymorphism-DNA markers for chromosome 21, which were derived from recombinant lamba-phage and plasmid clones made from DNA of a human-hamster hybrid cell line. In this report, we describe the generation of 19 new STSs that are specific for human chromosome 21.
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817
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Elk M, Lambropoulos P, Tang X. Theory of the cancellation of four-photon resonances by an off-resonance three-photon cancellation. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:465-478. [PMID: 9907885 DOI: 10.1103/physreva.46.465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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818
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Saeed M, Yang B, Tang X, DiMauro LF. Energy partition among fragments and electrons in high field dissociation. PHYSICAL REVIEW LETTERS 1992; 68:3519-3522. [PMID: 10045725 DOI: 10.1103/physrevlett.68.3519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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819
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Tang X. [Transcranial magnetic motor evoked potentials (MEP) and somatic sensory evoked potentials (SEP) in the management of cervical spondylitic myelopathy (CSM)]. ZHONGHUA SHEN JING JING SHEN KE ZA ZHI = CHINESE JOURNAL OF NEUROLOGY AND PSYCHIATRY 1992; 25:96-9, 126-7. [PMID: 1499416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Fourteen CSM patients with clinical findings of myelopathy had their diagnoses proved with MRI imaging and at operation. There were a control group of 28 normal subjects for MEP and another control group of 32 for SEP. The results of the study showed that 72.7% had MEP abnormality with prolongation of the central motor conduction time (CMCT) in 7 cases and absence of motor action potentials after C7 stimulation in one of the 11 patients. In 2 patients with prolongation of CMCT, normal SEPs were found in the same arm while 1 patient showed directly a reversal of the results. The short-term follow-up study in 10 patients showed normalization of the prolonged CMCT in one and reappearance of motor action potentials with C7 stimulation in another. The authors considered that the non-invasive and painless, transcranial magnetic stimulation of the motor pathways might be useful in the assessment and management of CSM patients and better than the electrical stimulation.
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820
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Pan J, Xu Z, Ji L, Zhao Z, Tang X. [Constituents of essential oils from leaves, stems, and fruits of Perilla frutescens (L.) Britt]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1992; 17:164-5, 192. [PMID: 1418538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The constituents of essential oils obtained from the leaves, stems, and fruits of Perilla frutescens were analysed by GC-MS. 65 compounds including perilla aldehyde, perilla alcohol, trans-caryophyllene and hexadecanoic acid, etc. were identified. Their percentages in the oils were given.
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821
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Zhao Z, Hu M, Tang X. [Determination of magnolol and honokiol in 3 species of houpo (corter Magnoliae) of different ages by HPLC]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1992; 17:15-8, 63. [PMID: 1524659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Based on the method of assessing the growing age of trees by "annual ring in the bark", the active ingredients magnolol and honokiol in 3 species Houpo (Magnolia officinalis, M. biloba, M. rostrata) of different ages, were determined by HPLC. The results present a reference for defining the reasonable period of collection and quality evaluation of Houpo.
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822
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Tang X, Yang D, Zhu K. [Analysis of essential oil from Libanotis laticalycina Shan et Sheh. by GC-MS]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1992; 17:40-2, inside back cover. [PMID: 1524667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
60 chemical components of the essential oil from Libanotis laticalycina were identified. The contents of these components were determined by GC.
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823
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Tang X, Rudolph H, Lambropoulos P. Nonperturbative time-dependent theory of helium in a strong laser field. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 44:R6994-R6997. [PMID: 9905938 DOI: 10.1103/physreva.44.r6994] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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824
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Zhang X, Tang X, Chen H. Inhibition of HIV replication by baicalin and S. baicalensis extracts in H9 cell culture. CHINESE MEDICAL SCIENCES JOURNAL = CHUNG-KUO I HSUEH K'O HSUEH TSA CHIH 1991; 6:230-2. [PMID: 1813061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Crude extracts of Scutellia baicalensis and a particular low molecular weight substance known as Baicalin were shown to inhibit HIV antigen expression in H9 cell culture, with 50% inhibitory doses of 0.6 microgram/ml and 3.3 micrograms/ml, respectively. They also inhibited P24 antigen production in H9 cells, with IC50's of 1.94 and 4.74 micrograms/ml, respectively. Cytoxicity was tested in H9 and HUT78 cells: Both exhibited relatively low levels of cytoxicity. These results indicated that S. baicalensis and Baicalin strongly inhibit HIV replication in cell culture.
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825
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Bachau H, Lambropoulos P, Tang X. Discretization techniques applied to the study of two-photon ionization in systems with two active electrons. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 44:4516-4520. [PMID: 9906492 DOI: 10.1103/physreva.44.4516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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826
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Tang X, Basile S. Dynamics of a one-dimensional model and a three-dimensional hydrogen atom in an intense high-frequency short-pulse laser. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 44:R1454-R1457. [PMID: 9906205 DOI: 10.1103/physreva.44.r1454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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827
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Bajic SJ, Compton RN, Tang X, Lambropoulos P. Resonantly enhanced multiphoton-ionization photoelectron spectroscopy of krypton and xenon: Experiment and theory. PHYSICAL REVIEW A 1991; 44:2102-2112. [PMID: 9906179 DOI: 10.1103/physreva.44.2102] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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828
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Chang TN, Tang X. Photoionization of two-electron atoms using a nonvariational configuration-interaction approach with discretized finite basis. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 44:232-238. [PMID: 9905672 DOI: 10.1103/physreva.44.232] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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829
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Lyras A, Tang X, Lambropoulos P, Zhang J. Erratum: Radiation amplification through autoionizing resonances without population inversion. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 44:796. [PMID: 9905737 DOI: 10.1103/physreva.44.796.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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830
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Elk M, Lambropoulos P, Tang X. Interference between nonresonant three-photon absorption and third-harmonic generation and the cancellation of four-photon resonances. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 44:R31-R34. [PMID: 9905748 DOI: 10.1103/physreva.44.r31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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831
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Rudolph H, Tang X, Bachau H, Lambropoulos P, Cormier E. Theory of intense-field ionization and above-threshold ionization of helium through multiple resonances. PHYSICAL REVIEW LETTERS 1991; 66:3241-3244. [PMID: 10043737 DOI: 10.1103/physrevlett.66.3241] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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832
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Gao XX, Tang X. [Relation between the clinical manifestations and electromyographic findings in motor neurone disease]. ZHONGHUA SHEN JING JING SHEN KE ZA ZHI = CHINESE JOURNAL OF NEUROLOGY AND PSYCHIATRY 1991; 24:98-100, 125. [PMID: 1860390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
343 cases of motor neurone disease (MND) were examined with electromyography. The result showed EMG examination was of much vale in helping to ascertain an accurate diagnosis which clinically could be made in only about 1/4 of the series of cases. The ages of onset ranged from 4 months to 10 years with an average of 36.8 years. 56.8% under 40 years. There was a higher male preponderance, the male/female ratio being 3.2:1. It was 1.6:1 in a report from a western country. 123 cases showed only one limb involvement clinically while the EMG findings were also abnormal in the other three limbs. Fibrillation potentials were found to be at more than two sites in one muscle in 84.5% in this series, where as they occurred in 95-100% of the infantile and juvenile cases. Abundant fibrillation potentials were found in 37.1% of the cases within 3 years after the onset and in 13.6% in those with a longer duration. The increment of the mean duration of motor unit potential was 94.5% and that of the mean amplitude 91%. It seemed not necessary to emphasize giant potentials. The motor nerve conduction velocities (NCV) were normal in 95% while the sensory NCV were almost always normal (98%). All of the 3 cases tested with single fiber EMG showed an increment of jitter of 95-100% and a muscle fiber density of 2.95-3.65.
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833
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Slanina J, Okken P, Tans PP, Turner DR, Goudriaan J, Esser G, Edmonds J, Akimoto H, Grosse HJ, Ozer U, Tang X, Tavares TM. Assessment of uncertainties in the projected concentrations of carbon dioxide in the atmosphere (International Workshop, ECN, Petten, The Netherlands: 4-6 July 1990). PURE APPL CHEM 1991. [DOI: 10.1351/pac199163050763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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834
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Tang X, Rudolph H, Lambropoulos P. Nonperturbative approach to atomic multiphoton processes under intense, short laser pulses. PHYSICAL REVIEW LETTERS 1990; 65:3269-3272. [PMID: 10042826 DOI: 10.1103/physrevlett.65.3269] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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835
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Tang X. [Inhibition of human immunodeficiency virus reverse transcriptase in vitro by extracts of Chinese medicinal herbs]. ZHONGGUO YI XUE KE XUE YUAN XUE BAO. ACTA ACADEMIAE MEDICINAE SINICAE 1990; 12:391-5. [PMID: 1709832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Thirty-three chinese medicinal herbs reputed by ancient chinese folklore to have anti-infective properties were extracted. The extracts and their compounds were tested for inhibitory activity against the human immunodeficiency virus RT in vitro. 8 of the 33 extracts were found to be active. Of these, MBAA9045 was studied in greater depth. We found that it was a noncompetitive inhibitor against HIV-RT. The concentration of MBAA9045 reducing HIV-RT activity by 50% (IC50) was 22 mumol/L. Chinese medicinal herbs appear to be a rich source of potentially useful materials for the treatment of human immunodeficiency virus infection.
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836
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Ma Y, Zhang Z, Tang X, Zhou R. [Chemical constituents of Asteropyrum peltatum (Franch.) Drumm. et Hutch]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1990; 15:733-4, 765. [PMID: 2282171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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837
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Bachau H, Lambropoulos P, Tang X. Method for the calculation of multiphoton and above-threshold ionization with discretized bases in two-electron atoms. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 42:5801-5804. [PMID: 9904743 DOI: 10.1103/physreva.42.5801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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838
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Tang X, Weber J, Baer Y, Finger F. Annealing-temperature influence on the dispersive diffusion of hydrogen in undoped a-Si:H. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 42:7277-7279. [PMID: 9994865 DOI: 10.1103/physrevb.42.7277] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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839
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Qu S, Yang Y, Tang X, Tang K, Deng X, Zhang Q, Zhang F. [Observation of efficacy of different dialytic therapies in renal transplantation preparation]. HUA XI YI KE DA XUE XUE BAO = JOURNAL OF WEST CHINA UNIVERSITY OF MEDICAL SCIENCES = HUAXI YIKE DAXUE XUEBAO 1990; 21:221-4. [PMID: 2391109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Fifty-seven cadaveric renal transplantations in fifty-five cases were analysed of them, thirty cases were prepared by continuous ambulatory peritoneal dialysis (CAPD group); twenty-seven transplantations in twenty-five cases were prepared by hemodialysis (HD group). Our data show that there is no significant difference in the survival duration between CAPD group and HD group; that there is also no significant difference in the survival duration between the two groups treated with the same immunosuppressive drugs, and that patients prepared by CAPD have a low risk of peritonitis after transplantation. It is better not to remove the Tenckhoff catheter until the graft function is stable so that it can be used for the transient peritoneal dialysis in the case of the insult of graft function or for the sampling of the peritoneal effusion for diagnosis of suspectable peritonitis after renal transplantation.
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840
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Tang X, Chang TN, Lambropoulos P, Fournier S, DiMauro LF. Multiphoton ionization of magnesium with configuration-interaction calculations. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 41:5265-5268. [PMID: 9903765 DOI: 10.1103/physreva.41.5265] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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841
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Tang X, Weber J, Baer Y, Finger F. Dispersive diffusion of hydrogen in a-Si:H: Influence of the film deposition temperature. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 41:7945-7947. [PMID: 9993110 DOI: 10.1103/physrevb.41.7945] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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842
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Charalambidis D, Lyras A, Lambropoulos P, Tang X, Bajic SJ, Compton RN. Collisional relaxation of the 6s. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 41:1457-1465. [PMID: 9903241 DOI: 10.1103/physreva.41.1457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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843
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Tang X, Lambropoulos P, L'Huillier A, Dixit SN. Theory of resonant multiphoton ionization of krypton by intense ultraviolet laser radiation. PHYSICAL REVIEW. A, GENERAL PHYSICS 1989; 40:7026-7030. [PMID: 9902114 DOI: 10.1103/physreva.40.7026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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844
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Lyras A, Tang X, Lambropoulos P, Zhang J. Radiation amplification through autoionizing resonances without population inversion. PHYSICAL REVIEW. A, GENERAL PHYSICS 1989; 40:4131-4134. [PMID: 9902645 DOI: 10.1103/physreva.40.4131] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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845
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Tang X, Lyras A, Lambropoulos P. Dynamics of resonances rapidly shifting under short laser pulses. PHYSICAL REVIEW LETTERS 1989; 63:972-975. [PMID: 10041236 DOI: 10.1103/physrevlett.63.972] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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846
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Jozefowicz ME, Laversanne R, Javadi HH, Epstein AJ, Pouget JP, Tang X, MacDiarmid AG. Multiple lattice phases and polaron-lattice-spinless-defect competition in polyaniline. PHYSICAL REVIEW. B, CONDENSED MATTER 1989; 39:12958-12961. [PMID: 9948183 DOI: 10.1103/physrevb.39.12958] [Citation(s) in RCA: 96] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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847
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L'Huillier A, Tang X, Lambropoulos P. Multiphoton ionization of rare gases using multichannel-quantum-defect theory. PHYSICAL REVIEW. A, GENERAL PHYSICS 1989; 39:1112-1122. [PMID: 9901348 DOI: 10.1103/physreva.39.1112] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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848
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Tang X, L'Huillier A, Lambropoulos P. Comment on "Laser-induced continuum structure in xenon". PHYSICAL REVIEW LETTERS 1989; 62:111. [PMID: 10039562 DOI: 10.1103/physrevlett.62.111] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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849
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Lambropoulos P, Tang X, Agostini P, Petite G, L'Huillier A. Multiphoton spectroscopy of doubly excited, bound, and autoionizing states of strontium. PHYSICAL REVIEW. A, GENERAL PHYSICS 1988; 38:6165-6179. [PMID: 9900374 DOI: 10.1103/physreva.38.6165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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850
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Lambropoulos P, Tang X. Comment on "Asymmetries in above-threshold ionization". PHYSICAL REVIEW LETTERS 1988; 61:2506. [PMID: 10039140 DOI: 10.1103/physrevlett.61.2506] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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