Beijing Chemical Group Import and Export Corp.

The Beijing Chemical Group Import and Export Corporation previously the Beijing Jinghuan Corporation, Ltd. was founded in September 1988 with the approval of the Beijing municipal government. A specialized foreign trade corporation under the Beijing Chemical Group, the corporation handles its own exports, mainly engaged in the import and export of the products produced individually or jointly by various enterprises in the group. Since it began operation in January 1989, the corporation has displayed the superiority of combined industry and trade and expanded

A sliding-mode triboelectric nanogenerator with chemical group grated structure by shadow mask reactive ion etching

With the support by the National Natural Science Foundation of China,a collaboration by the research groups led by Prof.Cheng Gang(程纲)from Henan University and Prof.Wang Zhonglin(王中林)from Beijing Institute of Nanoenergy and Nanosystems,Chinese Academy of Sciences,invents'a sliding-mode triboelectric nanogenerator with chemical group grated structure by shadow mask reactive ion etching',which was published in ACS Nano(2017,11(9):8796-8803).

A Giant of China's Cleaning Industry——The Blue Star Chemical Cleaning Group Corporation

First business: to clean a tea pot. Income: RMB 0.20 (less than 10 US cents at the time). Second business: to clean a boiler. Income: RMB 1, 200. Three months later, incomereached RMB 240, 000. Ten years later, the company had 350 subsidiaries across China and four joint ventures abroad, with an annual output value of more than RMB 300 million. The data are simple but intriguing, recording the history of the Blue

Bengbu Bayi Chemicals Group

Bangbu Bayi Chemicals Group is an enterprise assigned by theMinistry of Chemical Industry to produce nitrochlorobenzene seriesproducts. It has strong technical forces, advanced productiontechnology and quality control measures. Products include 20 varieties of chloro-anhydride series andnitrochlorobenzene series. They are widely used in pesticides,medicines, dyestuffs, rubber, daily chemicals, leather andpapermaking. Among these, the para-nitrochlorobenzene and otherthree products rank first in production scale in China, winning thetitles of excellent products from the Ministry of Chemical Industry.Many products sell well in southeast Asia, Europe and the Americas.

Tumor-suppressor effects of chemical functional groups in an in vitro co-culture system

Liver normal cells and cancer cells co-cultured on surfaces modified by different chemical functional groups, including mercapto （-SH）, hydroxyl （-OH） and methyl （-CHz） groups. The results showed that different cells exhibited changes in response to different surfaces. Normal cells on -SH surface exhibited the smallest contact area with mostly rounded morphology, which led to the death of cancer cells, while cancer cells could not grow on -CH3 groups, which also died. In the co-culture system, the -CH3 group exhibited its unique effect that could trigger the death of cancer cells and had no effects on normal cells. Our findings provide useful information on strategies for the design of efficient and safe regenerative medicine materials.

Jizhong Energy Group Mulls Salt Chemical Base

The Hebei provincial government recentlyapproved Jizhong Energy Group Co.,Ltd.to develop the salt mine reserve inNingjin county,Xingtai,Hebei provinceto build an important salt chemical basein China.It was predicted that the recentlyproved salt mine has a salt reserve of morethan 100 billion tons,with an

Acidic rearrangement of benzyl group in flavone benzyl ethers and its regioselectivity

The benzyl-substituted flavone compounds are rare in nature, while some of which have interesting biological activities. The total synthesis of benzyl-substituted flavone derivatives via the acidic rearrangement of benzyl groups in flavone benzyl ethers, and the complicated regioselectivity of the rearrangement were reported. The regioselectivity was proposed to be determined by the steric hindrance as well as the ease of electrophilic substitution reaction for benzyl cations at different positions of corresponding debenzylated fiavone compounds.

Gene expression profiling and mechanism study of neural stem cells response to surface chemistry

To declare the mechanisms of neural stem cells(NSCs)in response to material surface chemistry,NSCs were exposed to the self-assemble monolayers of alkanethiolates on gold surfaces terminated with amine(NH2),hydroxyl(OH)and methyl(CH3)for analysis.The morphological responses of NSCs were recorded;the gene expression profilings were detected by genechips;the gene expressions data of NSCs responded to different chemical groups were declared through the gene ontology term and pathway analyses.It showed that cells behaved dissimilar on the three chemical groups,the adhesion,proliferation and migration were easier on the NH2 and OH groups;the gene expressions of NSCs were induced differently,either,involved in several functional processes and signaling pathways.CH3 group induced genes enriched much in chemistry reactions and death processes,whereas many genes of cellular nucleotide metabolism were down-regulated.NH2 group induced NSCs to express many genes of receptors on membrane,and participated in cellular signal transduction of cell adhesion and interactions,or associated with axon growth.OH group was similar to NH2 group to induce the membrane response,but it also down regulated metabolism of cells.Therefore,it declared the chemical groups affected NSCs through inner way and the NH2,OH and CH3 groups triggered the cellular gene expression in different signaling pathways.

Cancer cell proliferation controlled by surface chemistry in its microenvironment

Hepatoma cells （Hepg2s） as typical cancer cells cultured on hydroxyl （-OH） and methyl （- CH3） group surfaces were shown to exhibit different proliferation and morphological changes. Hepg2s cells on OH surfaces grew much more rapidly than those on -CH3 surfaces. Hepg2s cells on -OH surfaces had the larger contact area and the more flattened morphology, while those on CH3 surfaces exhibited the smaller contact area and the more rounded morphology. After 7 days of culture, the migration of Hepg2s cells into clusters on the CH3 surfaces behaved significantly slower than that on the OH surfaces. These chemically modified surfaces exhibited regulation of Hepg2s cells on proliferation, adhesion, and migration, providing a potential treatment of liver cancer.