An Investigation of Crocidolite Contamination and Mesothelioma in a Rural Area of China^1

Crocidolite was found to be ubiquitous in a county in southwestern China. It had been widely used in the making of road pavement, stoves, wall paint, etc. The environmental levels of the asbestos fibers were determined. Of the 2175 local residents examined. 16 had asbestosis and 232 had pleural plaques. These clinical manifestations were noted mainly in patients over 50 years of age. (c)1990 Academic Press. Inc.

An investigation and analysis of the export earnings of 100 foreign trade enterprises in the first five months of this year

In order to understand the export situation faced by Chinese foreign trade enterprises and learn about their difficulties and problems in this regard, the China Association of Foreign Trade and Economic Cooperation Enterprises carried

AN INVESTIGATION ON THE INTERACTION MECHANISM OF β-CAROTENE WITH HALOGEN ATOM PRODUCED IN HALOBENZENE BY UV IRRADIATION

ESR measurements using spin trapping technique were carried out for β-carotene-halobenzene system under UV light irradiation.The ESR spectra observed in the presence and in the absence of β-carotene are markedly different.The possible scheme of β-carotene interacting with halogen atom was proposed.

AN INVESTIGATION ON THE MECHANISM OF SUPERCONDUCTIVITY IN ALKALI-DOPED BUCKMINSTERFULLERENE A_3C_(60)(A=K,Rb,Cs)

For the superconductors(Rb_xK_(1-x))_3C_(60)(x=0.1),according to BCS theory and assuming that the virtual phonon acting on electron-pair is corresponding to the intrasolecular vibration in the bnckminnterfullerene C_(60),a linear relationship of the superconducting transition temperature T_c with x has been derived,which is in agreement with the experimentals,

Protect Lawful Rights and Interests of Farmer-Workers——Report of an investigation to Shanghai and Jiangsu

On June 22-30, an investigation group made up of Vice-President Chen Shiqiu and a number of executive council members of the ChinaSociety for Human Rights Studies, and experts and scholars on human rights, conducted investigation in Shanghai and Wuxi, Zhenjiang and Changzhou in Jiang-

Tan Zhiqiang Headed an Investigation Delegation to Fujian Province

On the invitation of the Straits Textile & Clothing Fair (STCF) committee of Shishi City,Fujian

AN INVESTIGATION OF PEDIGREES OF 110 PATIENTS WITH GRAVES' DISEASE AND THE CLINICAL SIGNIFICANCE OF DETERMINATIONS OF ANTITHYROID ANTIBODIES OF THEIR FIRST-DEGREE RELATIVES

Eight hundred and ten pedigree members of 110 patients with Graves' disease were studied. In 700 first-egree relatives, inquiry of medical history, physical examination (including eyes, thyroid, heart rate, etc), thyroid function tests (serum T3, T4 and TSH levels), determinations of thyroglobulin antibodies (TgAb) and thyroid microsomal antibodies (TmAb) were performed. For male (female) probands, the incidence of Graves' disease in male (female) first-degree relatives were investigated and their serum TgAb and TmAb were analysed. The incidence of these two kinds of autoantibodies in the male (female) first-egree relatives of familial and nonfamilial Graves' disease were analysed. Eighteen persons with positive TgAb and TmAb from 5 pedigrees had been followed up one year after initial determinations. Our results suggest that the positive rates of TgAb and TmAb in the first-egree relatives of Graves' disease were coincident with the incidence of Graves' disease, and the positive results of TgAb and TmAb in the first-egree relatives of Graves' disease may be an indicator of pre-raves' disease or pre-utoimmune thyroid diseases.

AN INVESTIGATION INTO IMPINGEMENT JETS IN CYLINDRICAL CHAMBER

Laser Doppler Anemometer (LDA) is used for studying the effects of various parameters of impingement jets in cylindrical chamber (IJCC), such as d/D, H/d, γ (momentum ratio) and Re, on flow pattern, as well as those on turbulence intensity. Experimental results show that turbulence intensity is enhanced with decrease of II/d and/ or increase of d/D; and turbulence intensity approaches to a maximum as T=1. Re imposes a quite complicated in- fluence. In case the jet velocity remains unchanged, turbulence intensities might keep almost constant when Re's vary even a magnitude of order.

AN INVESTIGATION ON ASM TURBULENCE MODEL IN PREDICTIING NONISOTROPIC TURBULENT FLOWS

Non-isotropy is evident for flows with large streamline curvature. Algebraic stress model can fairly simulate non-isotropy of turbulence. Some flow situations were investigated with a well developed ASM model. The calcu- lated results show that the distributions of Reynolds stresses in different directions are obviously different. The non-isotropy of the flow is evident. The effect of streamline curvature on the flow feature of submerged water jet restricted by solid boundaries were studied, and its application in the design of energy dissipators of free trajectory jet type was disscused.

An investigation of chemically deposited Ni-P alloys by EXAFS and XRD

Five samples of chemically desposited Ni-P amorphous alloys were prepared and inves- tigated.In these amorphous alloys there are Ni-P atom groups in which phosphorus and nickel are connected with strong interaction.Nickel atoms and Ni-P groups are deposited in a random manner on the surface of matrix and a quasilayer structure is formed.The spacing between two layers in alloys resembles that in(111)plane in the nickel crystal.Therefore there is a peak at the same position of 2θ=44.4° as that of the(111)reflection of crystalline nickel in the X-ray powder diffraction pat- tern of alloys.However,the dimension of Ni-P groups is different from that of a nickel atom and the atomic arrangement in the layer is in disorder.These result in the space change and there is a distribution of spacing around the average.As a consequence of distribution of spacings,the peak at 2θ=44.4° is broadened and enhanced as the amount of P increases.

An Investigation of TV Audience

WITH 850 million viewers watching 300 million TV sets, China has the biggest TV audience in the world. Here, 72 percent of households with TVs. have more than one set. On average, urban citizens spend more than two hours watching TV every day. All the above data comes from the China Central Television Consultation Center of Information Investigation (CCTVCCII).

An Investigation Into The Enterprise Logistics Outsourcing

Introduction The purpose of this report is to thoroughly investigate nowadays the current situation of enterprise outsourcing logistics,which keeps developing rapidly but hides lots of risks such as information distortion,cultural differences between enterprises and logistics businesses and so on.By making comparisons between enterprises of all sizes。

1,3-Dinitro-2-chloro-5-trifluorotoluene and its bridged derivatives Ⅰ.An investigation on the displacement reactions of bidentate nucleophiles towards aromatic rings

The reactions of 1,3-dinitro-2-chloro-5-trifluorotoluene(DNCTT)(1)and its bridged com- pounds with bidentate nucleophiles have been investigated.Primary or secondary diamines and diethylene glycol react with 1 and its bridged derivatives by replacing the substituent grouppara to CF_3, whereas ethanedithiol reacts either by replacing the substituent group para to CF_3 or by displacing both groups and a nitro group.The results have been rationalized in terms of electronic effects and nucleophilicity of the nucleophiles.