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Accumulation of Nitrate in Vegetables and Its Possible Implications to Human Health

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Agricultural Sciences in China 2007年第10期6卷 1246-1255页

作者： DU shao-ting ZHANG Yong-song LIN Xian-yong Key Lab of Environmental Remediation and Ecosystem Health Ministry of Education/College of Environmental and Resources SciencesZhejiang University Hangzhou 310029 P.R.China

In recent times, there are two kinds of completely opposite viewpoints about the impacts of nitrate on human health. To further objectively understand the effects of nitrate on human health, both of harmfulness and possible benefits of nitrate to human body., it is discussed in this review from the aspects of nitrate accumulation in vegetables, the source of nitrate ingested into human body, and the transformation of nitrate in human body, as well as the pathogenesis and physiological functions of nitrate metabolism.

关键词： vegetable nitrate methemoglobin carcinogenesis human health NO bacteria

Noise Suppression Effect of Composites Containing Glass-Covered Amorphous CoFeSiBCr Wires

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Chinese Physics Letters 2012年第6期29卷 283-286页

作者： ZHANG Jun-Feng LI De-Ren CHEN Zheng LU Zhi-Chao ZHOU shao-Xiong China Iron&Steel Research Institute Group Advanced Technology&Materials Co.Ltd.Beijing 100081

The noise suppression effect and its mechanism are investigated for a composite sheet and a composite film made of glass-covered amorphous CoFeSiBCr *** samples show a significant noise suppression *** power loss ratio of the composite sheet is above 80% from 1.6 GHz to 8.5 GHz,and that of the composite film is above 70% from 3.2 GHz to 8.5 GHz even if its thickness is only 0.20 *** composite sheet demonstrates high real and imaginary permittivity above 30.7 and low real and imaginary permeability below *** surface resistivities of the two composite samples are as high as about 3 × 10^(12) Ω/*** power loss of the composite containing glass-covered wires should be mainly contributed by dielectric loss derived from electronic polarization and relaxation.

关键词： composite effect imaginary

Effect of superoxide dismutase and malondialdehyde metabolic changes on carcinogenesis of gastric carcinoma

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World Journal of Gastroenterology 2005年第28期11卷 4305-4310页

作者： shao-Hong Wang Jin-Hui Shen Hou-Qiang Zhou Xiao-Yang Qiu Yi-Zhong Wang Ke-Yi Zhang Department of Pathology Central Hospital of Shantou City Shantou 515031 Guangdong Province China Department of Laboratory Central Hospital of Shantou City Shantou 515031 Guangdong Province China Department of Surgical Oncology Central Hospital of Shantou City Shantou 515031 Guangdong Province China

AIM： To investigate the relationship between the superoxide dismutase （SOD）, malondialdehyde （MDA） metabolic changes and the gastric carcinogenesis.METHODS： The SOD activity and MDA content were measured in the gastric tissues from the focus center, peripheral and far-end areas of gastric carcinoma （n = 52） arid gastric ulcer （n = 10）. All the tissues were subjected to routine histological examinations and classifications.RESULTS： The SOD activity was greatly reduced but the MDA content was markedly increased in the center areas of the non-mucous gastric carcinoma （non-MGC）; and the poorly differentiated gastric carcinoma varied. The SOD activity was gradually decreased and the MDA content was gradually increased in the tissues from the focus far-end, peripheral to center areas of non-MGC. Both of the SOD activity and the MDA content were significantly declined and were respectively at same low level in the tissues from the focus center, peripheral, and far-end area with the mucous gastric carcinoma （MGC）. In contrast to the gastric ulcer and grade I or II of non-MGC, the same level of the SOD activity and the MDA content were found in the focus center areas. Between non-MGC （groups A-D） and gastric ulcer （group F）, the differences of SOD activity and MDA content were very noticeable in the gastric tissues from the focus peripheral and far-end areas, in which the SOD activity showed noticeable increase and the MDA content showed noticeable decreasein the gastric ulcer.CONCLUSION： The active free radical reaction in the gastric tissues can induce the carcinogenesis of non-MGC. The utmost low ability of antioxidation in the gastric tissues can induce the carcinogenesis of MGC. The metabolic change of the free radicals centralized mostly in the center of ulcerated lesions only, which suggested the ability of antioxidation was declined only in these lesions. However, the metabolism of free radicals varied significantly and the ability of antioxidation declined not

关键词： Gastric carcinoma Free radical Superoxide dismutase

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陆相断陷盆地层序地层模式

石油勘探与开发 2006年第5期33卷 548-552页

作者：郭少斌中国地质大学

对中国东部第三系陆相断陷盆地层序地层研究表明:陆相断陷盆地存在着同生断裂坡折带和弯折带2种基本的构造类型。当水平面下降到坡折带以下时,构成一个完整的水平面升降旋回,可形成包括低位体系域、湖扩展体系域和湖萎缩体系域的层序(... 详细信息

对中国东部第三系陆相断陷盆地层序地层研究表明:陆相断陷盆地存在着同生断裂坡折带和弯折带2种基本的构造类型。当水平面下降到坡折带以下时,构成一个完整的水平面升降旋回,可形成包括低位体系域、湖扩展体系域和湖萎缩体系域的层序(三分体系域);当水平面未下降到坡折带以下时,构成一个不完整的水平面升降旋回,可形成包括湖扩展体系域和湖萎缩体系域的层序(二分体系域)。这两种层序在纵向上呈规律性叠置组合,构成了盆地层序充填序列。在二分体系域层序中,湖萎缩体系域上覆的湖扩展体系域泥岩、油页岩是良好的烃源岩和盖层,湖萎缩体系域下伏的湖扩展体系域泥岩、油页岩也是良好的烃源岩,因此,这类砂体成藏条件优越,往往形成大型油气藏;三分体系域层序的低位域砂体成藏条件优越,地震剖面易于识别,是隐蔽油气藏勘探的主要目标。

关键词：坡折带三分体系域二分体系域隐蔽圈闭

Neoarchean Magmatic Events in the Western Songnen Massif,Central Asian Orogenic Belt:Timing and Tectonic Significance

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Acta Geologica Sinica(English Edition) 2023年第2期97卷 436-448页

作者： WU Xinwei LIU Zhenghong LIU Yongjiang ZHANG Chao shao Jun ZHANG Chao ZHANG Yujin GUO Wei LIU Baoshan ZHANG Guangyu Shenyang Center of China Geological Survey Shenyang 110034China Key Laboratory of Deep Mineral Resources Exploration and Evaluation Department of Natural Resource of Liaoning ProvinceShenyang 110034China College of Earth Sciences Jilin UniversityChangchun 130061China Frontiers Science Center for Deep Ocean Multispheres and Earth System Key Laboratory of Submarine Geosciences and Prospecting TechniquesMOE and College of Marine GeosciencesOcean University of ChinaQingdaoShandong 266100China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao Shandong 266100China School of Resources and Environmental Engineering Shandong University of TechnologyZiboShandong 255049China

Whether a Neoarchean basement existing in the Songnen massif is currently *** of Archean magmatism from the Songnen Massif is helpful to resolve this ***,we report newly discovered Neoarchean Shanquan pluton in the Western Songnen *** Neoarchean Shanquan pluton are mainly composed of granites that are exposed near the town of Shanquan in Heilongjiang ***-ICP-MS zircon U-Pb dating reveals that the sample 2015TW1 has an upper intercept age of 2801±69 Ma and a weighted mean age of 2708±18 Ma,while samples LJ27QY1 and LJ27QY2 have upper intercept ages of 2677±57 Ma and 2653±18 Ma,and weighted mean ages of 2649±10 Ma and 2653±15 Ma,*** indicates that these granites were formed at~2.7 *** of the~2.7 Ga zircons have older TDM2 ages of 2762–3326 Ma with positiveεHf(t)values ranging from 0 to 6.4,while a few of the zircons have negativeεHf(t)values ranging from-8.1 to-11.5 and older TDM2 ages varying from 3158 to 3264 *** zircon Hf isotopes indicate that Paleo-Mesoarchean crusts might once existed in the Songnen Massif,and the studied Neoarchean magmas were principally derived from partial melting of these Paleo-Mesoarchean ancient *** on the geochronological spectrum of magmatic and detrital zircons,the Songnen,Erguna,Jiamusi,Bureya massifs may have a common basement prior to the Neoproterozoic and may even be linked with the Triam Craton.

关键词： tectonic attribute Neoarchean magmatism Precambrian basement Longjiang area Songnen Massif

Success Begins with Exploration Zhou Changxin’s heavy-color oil painting

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China & The World Cultural Exchange 2009年第11期75卷 26-28页

作者： shao Dazhen

With years of practice in mural and oil painting,Zhou Changxin has developed an innovative style of heavy-color oil painting by

关键词：中国周昌文化艺术油画壁画

Three New Diterpenoids from Isodon Eriocalyx

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Chinese Chemical Letters 1998年第11期9卷 0-0,0-0页

作者： shao Nong CHEN shao Yuan CHEN Jian Min YUE Zhong Wen LINGuo Wei QIN Han Dong SUN Yao Zu CHEN(Shanghai Institute of Materia Medica, Academia Sinica, Shanghai 200031)(The Laboratory of Phytochemistry, Kunming Institute of Botany, Academia Sinica, Kunmi Shanghai Institute of Materia Medica Academia Sinica Shanghai 200031 China Laboratory of Phytochemistry Kunming Institute of Botany Academia Sinica Kunming 650204 China Laboratory of Phytochemistry Chengdu Institute of Biology Academia Sinica Chengdu 610041 China Department of Chemistry Zhejiang University Hangzhou 310027 China State Key Lab. of Appl. Organ. Chem. Lanzhou University Lanzhou 730000 China

Three new diterpenoids, eriocalyxins C-E, were isolated from Isodon eriocalyx. Their structures were elucidated as 66-hydroxy- 15β-acetoxy-3α, 20-epoxy-16β, 17-epoxy-ent-kaur-1,7-dione, 1α, 7β-dihydroxy-6β, 15β-diacetoxy-7, 20-epoxy-ent-kaur-16-ene, and 15β-acetoxy-1, 6-dioxo-6, 7-seco-ent-kaur-2, 16-dien-7, 20-olide by means of spectroscopic methods, including two-dimensional NMR techniques.

关键词： Isodon eriocalyx Labiatae ent-kaurane diterpenoids eriocalyxins C-E

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Bilateral liver resection for bilateral intrahepatic stones

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World Journal of Gastroenterology 2009年第29期15卷 3660-3663页

作者： shao-Qiang Li Li-Jian Liang Yun-Peng Hua Bao-Gang Peng Dong Chen Shun-Jun Fu Department of Hepatobiliary Surgery the First Affiliated Hospital Sun Yat-sen UniversityGuangzhou 510080 Guangdong Province China

AIM: To evaluate the shortand long-term outcomes of bilateral liver resection for bilateral intrahepatic stones. METHODS: We reviewed retrospectively 101 consecutive patients with bilateral intrahepatic stones who underwent bilateral liver resection in the past 10 years. The shortand long-term outcomes of the patients were analyzed. The Cox proportional hazards model was used to identify the risk factors related to stone recurrence. RESULTS: There was no surgical mortality in this group of patients. The surgical morbidity was 28.7%. Stone clearance rate after hepatectomy was 84.2% and final clearance rate was 95.0% following postoperative choledochoscopic lithotripsy. The stone recurrence rate was 7.9% and the occurrence of postoperative cholangitis was 6.5% in a median follow-up period of 54 mo. The Cox proportional hazards model indicated that liver resection range, less than the range of stone distribution (P = 0.015, OR = 2.152) was an independent risk factor linked to stone recurrence. CONCLUSION: Bilateral liver resection is safe and its shortand long-term outcomes are satisfactory for bilateral intrahepatic stones.

关键词： Intrahepatic stone Hepatectomy Riskfactor Outcome Bilateral

Novel High-nitrogen Energetic Compound Based on Semicarbazide-substituted Tetrazine

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Chemical Research in Chinese Universities 2012年第6期28卷 931-935页

作者： ZHANG Jlan-guo LIANG Yan-hui XIE shao-hua FENG Jin-ling WANG Kun ZHANG Tong-lai State Key Laboratory of Explosion Science and Technology Beij'ing Institute of Technology Beo'ing 100081 P. R. China The 46th Institute of the Sixth Academy of China Aerospace Science & Industry Corporation Hohhot 010010 P. R. China

A novel energetic compound 3-（3,5-dimethylpyrazol-1-yl）-6-semicarbazide-1,2,4,5-tetrazine（DSTZ） was prepared and characterized by elemental analysis and Fourier transform infrared（FTIR） *** crystal structure was determined by X-ray single crystal diffraction *** crystal belongs to the monoclinic system with a P2 1 /c space group,a=0.9942（7） nm,b=0.5067（3） nm,c=1.1830（8） nm,β=109.616°,Z=2 and D c =1.475 g/cm *** extensive hydrogen bonds,the molecules were linked together to form a three-dimensional herringbone-like *** analysis of the compound was carried out via differential scanning calorimetry（DSC） and thermogravimetric-derivative thermogravimetry（TG-DTG）.Under a nitrogen atmosphere at a heating rate of 10 K/min,DSTZ decomposed directly in a range of 493―513 *** one intense exothermic process was observed and the decomposition products were all gaseous *** sensitivity properties were determined,showing that the title complex was insensitive to friction,impact and flame.

关键词： 1 2 4 5-Tetrazine Semicarbazide Crystal structure Sensitivity property