How Work Organization Affects the Prevalence of WMSDs: A Case-control Study

Objective In this study, we aimed at exploring the association between work-related musculoskeletal disorders（WMSDs） and work organization based on a case-control study. Methods A total of 1938 workers who claimed to suffer from WMSDs were selected from Beijing, Henan, Hubei, and the Guangdong province. The control group consisted of 2009 workers employed in similar industries without severe disease or musculoskeletal discomforts. We used a modified version of the questionnaire developed by the NMQ and the DMQ to investigate individual and work-related factors. Results A total of 13 variables（P〈0.1） were selected by the chi-square test and finally, 7 variables entered into the equation, with 6 variables reaching statistical significance（P〈0.05）. The odds ratios（OR） of ＇work changing with season＇ and ＇sufficient rest time＇ did not reach 1（0.749 and 0.441, respectively）. In addition, ＇sufficient rest time＇ seemed to be the stronger protective factor according to its higher standardized coefficient. And ＇repetitive work every minute＇, ＇constantly repetitive work＇（every day）, ＇shortage of site personnel＇, and ＇often switching shifts with others＇ seemed to be the risk factors. Conclusion Work organization may have comprehensive effects on the occurrence of WMSDs. This pattern of associations suggests that further investigation into the mechanism of how work organization affects the prevalence of WMSDs is required.

Study of fouling organisms at Tuoji Island in the Bohai Channel

From June 1984 to May 1985, monthly and seasonal panel tests of fouling organisms were carried out on rafts at Tuoji Island. Seventy - three species were obtained. The occurring frequencies of the following species are all at least 30%: Ectocarpus confervoides, Polysiphonia urceolata, Tubularia mesembryanthmum, Cfytia edwardsi, Tubulipora pulchra, Celleporella hyalina, Mytilus edulis, Hiatella arctica, Caprella acanthogaster, Corophium crassicome, Jassa cf.falcata and Podocerus cf . inconspicuus. Large or calcareous species are not dominant ones. The wet weight is comparatively light, the yearly wet weight being 9.12 kg m-2. Attaching seasons of major species are from June to October and no bio - attachment occurs between January and April. Fouling organisms at Tuoji Island differ rather greatly from those in the harbours along the continental coast, showing the charcteristics of fouling organisms in the northern island harbours of China.

An ecological study on the fouling organisms in Yantai Harbour

Yantai Harbour (37°33′15″N , 121°23′42″E) is situated at the north coast of Shandong Peninsula and is a large fishing and commercial port of North China. From June 1983 to May 1984, a yearly panel test on fouling organisms was carried out at the non-fixed jetties in the inner and outer harbour. The test method was according to "the Marine Survey

THE STUDY OF PHOTOELECTROCHEHICAL CELLS BASED ON CHLOROPHYLL AND ORGANIC DYES

Tetraiodofluorescein(TIF)and safranine T(ST)had great effects on the photovoltaic parameters of the cells.The Voc of the cells was about 3-5 times higher than that of the cells without TIK and ST,Isc increased 1 to 2 orders of magnitude.The Voc and Isc could be increased greatly only when Voc and Isc of the cell with Pt as WE properly combined with the Voc and Isc produced by chla in the original cell.According to absorption spectra and output characters,the results were elucidated.

An electrochemical study on the effects of marine fouling organisms on steel used in the sea

-Study on the effects of microorganism secretive membrane and covering layer of macrofouling organisms-Balanus reticulatus, Ostrea plicatula, Membranipora, Corophium and Algae on the corrosion of carbon steel and low-alloy steel by the determination of natural corrosive potentials, linear polarization and the polarization curver of dynamic potential scanning through an electrochemical equipment.The results show that the microorganism secretion membrane formed on sample surface has some protective role, during the initial period of exposure (about ten days). Then protective role decreases and corrosive rate increases with the lapse of immersion time. The protective role of some macrofouling organisms is shown in order as follows: Corophium> Balanus reticulatus>Algae>Membranipora>Ostrea plicatula.

China Society for Human Rights Studies Organizes Forum to Study and Implement Guidelines of 3rd Plenum of 18th CPC Central Committee

The China Society for Human Rights Studies （CSHRS） organized on Nov. 28 a forum to study and implement the guidelines of the third plenary session of the 18th Central Committee of the Communist Party of China （CPC）. Executive members of CSHRS and other CSHRS members in Beijing discussed improvement of judicial protection for human rights and legal construction in China. CSHRS President Luo Haocai, who was vice chairman of the 10th National Committee of the Chinese People＇s Political Consultative Conference, delivered a speech at the forum.

STUDIES OF NUCLEOLAR ORGANIZER REGIONS AND MUCIN HISTOCHEMISTRY IN ULCERATIVE COLITIS

The argyrophil method for nucleolar organizer regions (AgNOR) known as the AgNor technique and mucin histochemical stain were applied to Investigate the dysplasia and cancaration in ulcerative colitis Including 58 cases of biopsy specimens and three cases operative specimens. The numbers of AgNOR have been gradully increased with the grades of dasplasls. Similarly the percentage of sialomucin having vicinal diols on side chain of sialic acid also gradully Increased with the grades of dysplasia. The AgNOR reflects rDNA transcriptional activity responsible for degrees of differentiation of cell. Epithelial cells secreting a heterogeneous mucin, could be taken as a signal of abnormal cellular differentiation. AgNOR and mucln chages might be assumed as a criteria In representing malignant transformation.

BASICITY ON ZEOLITE NAX AFTER WATER HANDLING STUDIED BY TPD OF ORGANIC ACID

In this paper the effect of ion-exchange simplified as water handling on basic zeolitewas studied.It was foond that the interaction between chemisorbed water and Na+-O2- couplewould increase the total number of basic sites, while weaken the intensity of each basic sites.Theprocess can be explained by the adsorb model of organic acid on NaX presented before.

A STUDY ON ACID-BASE DISTURBANCE IN PATIENTS WITH POST-TRAUMATIC MULTIPLE ORGAN FAILURE

In order to diagnose accurately the type of acid梑ase disturbance (ABD) in patients with post梩raumatic multiple organ failure (PMOF), arterial blood gases and electrolytes were determined 645 times on 112 patients with PMOF and the data were analyzed with the pre-estimated compensatory formula of ABD and the calculations of anion gap, potential bicarbonate, and blood chlorides. Simple ABD was found in 381 times of determinations and double ABD in 239 when only the formula was used in the analysis, while 264 times of simple ABD, 260 times of double ABD and 96 times of triple ABD were found when the formula was employed in combination with the calculations of anion gap, potential bicarbonate and blood chloride. The mixed types of ABD were increased by 49% (117 times) from 239 to 356 times and triple ABD was increased from 0 to 96 times. The findings indicate that the employment of the combined formula and the calculations of anion gap, potential bicarbonate and blood chloride is of great significance to assess ABD especially its mixed and complicate types in patients with PMOF. It is emphasized that along with the monitoring of blood gases, the determination of blood electrolytes and the calculation of anion gap and potential bicarbonate should be performed to determine the correct type of ABD.

The study of nanojoule femtosecond laser ablation on organic glass

The Ti:sapphire oscillator is used to realize structural change in an organic glass (polymethyl -methacrylate (PMMA)). Single pulse fluence threshold of PMMA and the relation of the breakdown threshold with different numerical aperture objectives are determined using a formula deduced from an existent equation. Three-dimensional dots in the organic glass is performed at the same time.

Clinical and Experimental Study of Effect on Acute Phase Protein of Multiple Organ Dysfunction Syndrome Treated with Dachengqi Decoction

Objective: To investigate the level of acute phase proteins (APP)-synthesized in hepatocytes in pathogenic process of multiple organ dysfunction syndrome (MODS) and the effect of Dachengqi Decoction (DCQD) on it. Methods: The levels of C-reactive protein (CRP),α1-acid glycoprotein (AAG), α1-antitrypsin total (α1AT), α2-macroglobulin (α2-MG), ceruloplasmine (CP), hepatoglobin (HP) and transferrin (TF) synthesis were determined in 32 cases of MODS patients and rat models of MODS induced by acute infective peritonitis and mesenterial artery ischemia-reperfusion.Results: The serum APP level in MODS patients was increased and higher than that in the control group (P < 0. 01 ). After 3 days of DCQD treatment it reduced significantly (P <0. 05). Serum APP level in MODS model was also increased significantly, and after 3 days of DCQD treatment, it reduced significantly (P < 0. 05). The APP secreting level of rat hepatocytes cultured in vitro raised after stimulated and activated by lipopolysacchride, which was reduced after cultured with rabbits serum containing different concentration of effective ingredients of DCQD. The APP inhibiting effect of DCQD was dose dependent. Conclusion: Purgation therapy with DCQD could reduce the stimulation of pathogenic factors on hepatocytes, protect tissues and organs from damage caused by excessive inflammatory reaction.Original article on CJIM(Chin) 1998; 18(8): 453

Photophysics studies of organic compounds Ⅷ.Interaction between excited singlet state of pyrene and aromatic amines

The quenching processes of the excited singlet state of pyrene by triphenylamine,diphenyl- amine and N,N-dibenzylaniline in various solvents at room and lower temperature have been stu- died with both static state fluorescence spectroscopy and fluorescence lifetime techniques.On the basis of experimental data,a preliminary quenching mechanism has been discussed.The geome- trical configuration models of the exciplexes formed between the excited pyrene and aromatic ami- nes in nonpolar solvents were proposed.

ESR studies on reactions of dicyclopentadienyl dicarbonyl titanium with organic halides

ESR method was used to elucidate the mechanism of the reactions of alkyl,allyl or benzyl halides with dicyclopentadienyldicarbonyl titanium.The paramagnetic intermediates of the reac- tions were identified during the course of the reactions.The reaction mechanism based on ESR find- ings and the products analyses is postulated to operate on radical pathways.When alkyl halides were used to react with the organometallic compound 1,the intermediate found was[Cp_2Ti(CO)X](C), and the main product was identified to be dicyclopentadienyl-acyl-halo titanium(3),an insertion of TiCO into R-X,i.e.[Cp_2Ti-C(O)R]X.When allyl or benzyl halidcs were used,the intermediate found was[Cp_2TiX](B),and the main products were identified to be the dicyclopentadienyl titanium dihalides and the coupling products of allyl or benzyl groups.