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A method of quantitatively calculating amount of allochthonous organic carbon in lake sediments

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Chinese Science Bulletin 1997年第21期42卷 1821-1823页

作者： Qian, JL Wang, sm Xue, B Chen, RS Ke, SZ Nanjing Inst Geog & Limnol Nanjing 210093 Peoples R China

TOTAL organic matter(TOM) or total organic carbon(TOC) is often treated as an importantindicator of lake environment. As a matter of fact, TOC is of multi-origin, and can simply bedivided into two parts: autochthonous and allochthonous organic carbon. The autochthonousorganic carbon is mainly controlled by the production of the plankton of lake itse1f; and the al-lochthonous one by climate and environment in the catchment area, e. g. more precipitationand runoff and densely developed vegetation will give rise to more allochthonous organic com-

关键词： lake sediment allochthonous organic carbon C/N.

Solid state reaction of aromatic ketones with heteroaromatics

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Chinese Journal of Chemistry 1995年第6期13卷 520-524页

作者： Du, DM Meng, sm Wang, YM Meng, JB Zhou, XZ NANKAI UNIV DEPT CHEMTIANJIN 300071PEOPLES R CHINA YANBEI TEACHERS COLL DATONG 037000JILINPEOPLES R CHINA

The solid state reactions of p-nitroacetophenone, acetyl-ferrocene with indole were catalyzed by anhydrous zinc chloride or aluminum chloride, and gave exclusively the 1:2 condensation products. The solid state condensation of aromatic ketones with 1-phenyl-3-methyl-5-pyrazolone was also investigated, and the 1:1 and 2:1 condensation products were obtained. The structures of eleven new products were determined by IR, MS, H-1 NMR and elemental analysis.

关键词： solid state reaction aromatic ketone indole 1-phenyl-3-methyl-5-pyrazolone

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软件 1992年第2期13卷 125-139页

作者： KEAR.,sm 励小平

EFFECT　OF　ANNEALING　TEMPERATURE　ON　TEXTURE　OF　COLD－ROLLED　Ni₄₇Ti₄₄Nb₉　SHEET

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中国有色金属学会会刊：英文版 1995年第1期5卷 88-93页

作者： YANG, GJ XIE, LY HU, WY DENG, J HAO, sm NW INST NONFERROUS MET RES BAOJI 721014PEOPLES R CHINA NORTHEASTERN UNIV SHENYANG 110006PEOPLES R CHINA

ＥＦＦＥＣＴＯＦＡＮＮＥＡＬＩＮＧＴＥＭＰＥＲＡＴＵＲＥＯＮＴＥＸＴＵＲＥＯＦＣＯＬＤ－ＲＯＬＬＥＤＮｉ４７Ｔｉ４４Ｎｂ９ＳＨＥＥＴＹａｎｇ；ＧｕａｎｊｕｎＸｉｅ；ＬｉｙｉｎｇＨｕ；ＷｅｎｙｉｎｇＤｅｎｇ；ＪｕＨａｏ... 详细信息

ＥＦＦＥＣＴＯＦＡＮＮＥＡＬＩＮＧＴＥＭＰＥＲＡＴＵＲＥＯＮＴＥＸＴＵＲＥＯＦＣＯＬＤ－ＲＯＬＬＥＤＮｉ４７Ｔｉ４４Ｎｂ９ＳＨＥＥＴＹａｎｇ；ＧｕａｎｊｕｎＸｉｅ；ＬｉｙｉｎｇＨｕ；ＷｅｎｙｉｎｇＤｅｎｇ；ＪｕＨａｏ；Ｓｈｉｍｉｎｇ(Ｎｏ?..

关键词： annealing temperature Ni47Ti44Nb9 texture ODF

Comparative study of protein pattern changes and mineral composition in cultivated and newly domesticated wild Flammulina velutipes

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Studies in Fungi 2019年第1期4卷 282-291页

作者： Hashemian sm Pourianfar HR Rezaeian S-H Department of Chemistry Ferdowsi University of MashhadMashhadIran Industrial Fungi Biotechnology Research Department Research Institute for Industrial BiotechnologyAcademic Center for EducationCulture and Research(ACECR)Khorasan Razavi Province BranchP.O.Box:91775-1376Mashhad-Iran

A wild strain of Flammulina velutipes indigenous to Iran has been recently adapted for artificial cultivation,requiring nutritional information in order to improve its utilization as a medicinal-culinary ***,the current study aimed to evaluate protein profile of this domesticated wild *** strain over six different developmental stages,in comparison with a commercially cultivated strain of *** macro-and microelements were also investigated in the mature sporomes cultivated in a lignocellulosic substrate composed of 40%wheat straw+40%sawdust+18%wheat bran+1%lime+1%*** lowest and highest amounts of protein were observed in primordia(33%of dry matter)and sporomes picked at the third or fifth day of harvesting(57%of dry matter),respectively(p≤0.05),followed by an obvious decrease in protein content at the late stages of harvesting(p≤0.05).Further SDS-PAGE analyses revealed that the protein molecular mass increased from less than 30 kDa in primordia to 235 kDa in mature ***,no significant difference in protein profiling was noticed between the wild and the reference strains of any given stage(p≥0.05).While nutritional elements such as K,P and Mg were found at 886.9,745.2,and 142.7 mg/100 g of dry weight,respectively,no heavy metals was found at levels higher than the provisional maximum tolerable intake in the *** study may be considered an initial step towards recognition of the wild *** as a non-toxic functional food,warranting further proteomics studies.

关键词： Developmental stages Nutritional elements PAGE Protein content SDS Wild mushrooms

Design of photochromic and electrochemical active azosilane self-assembled monolayer

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Chinese Science Bulletin 1997年第14期42卷 1161-1164页

作者： Yu, HZ Wang, YQ Wang, J Cai, sm Liu, ZF Center for Intelligent Materials Research College of Chemistry and Molecular Engineering Peking University Beijing China

THE electrochemical and/or photochemical active organic molecules have attracted much atten-.tion due to their potential applications in the field of molecular electronics. The azobenzenederivatives have been widely studied as typical systems, owing to their reversible trans-cis iso-merization and reduction/oxidation reactions (see fig. 1 (a) ). We have studied the char-acteristic photochromic and electrochemical behavior of azobenzene Langmuir-Blodgett mono-

关键词： azobenzene self-assembled monolayer (SAM) photochromism electrochemistry.

Highly conductive,stretchable,durable,skin-conformal dry electrodes based on thermoplastic elastomer-embedded 3D porous graphene for multifunctional wearable bioelectronics

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Nano Research 2023年第5期16卷 7627-7637页

作者： Shipeng Zhang MdSharifuzzamn sm Sohel Rana MdAbu Zahed Sudeep Sharma Youngdo Shin Hyesoo Song Jae Yeong Park Department of Electronic Engineering Kwangwoon University447-1 Wolgye-dongNowon-guSeoul 01897Republic of Korea

Long-term bioelectric potential recording requires highly reliable wearable dry ***-induced graphene(LIG)dry electrodes on polyimide(PI)films are difficult to conform to the skin due to the non-stretchability and low flexibility of PI *** a result,high interface impedance and motion artifacts can occur during body *** LIG to flexible substrates such as polydimethylsiloxane(PDMS)and Ecoflex allows for stretchability and ***,the transfer process produces a significant loss of conductivity destroying the structural function and electron conduction properties of the *** found robust physical and chemical bonding effects between LIG and styrene-ethylene-butylene-styrene(SEBS)thermoplastic elastomer substrates and proposed a simple and robust low-conductivity loss transfer *** embedded LIG onto SEBS to obtain high stretchability,high flexibility,low conductivity *** deposition(EPD)of poly(3,4-ethylenedioxythiophene):polystyrenesulfonic acid(PEDOT:PSS)on LIG forms an ultrathin polymer conductive *** deposition thickness of the conductive polymer is adjusted by controlling the EPD deposition time to achieve optimal conductivity and chemical ***/LIG/PEDOT:PSS(SLPP)dry electrodes have high conductivity(114Ω/Sq),stretchability(300%)and reliability(30%stretch,15,000 cycles),low electrode-skin impedance(14.39 kΩ,10 Hz).The detected biopotential signal has a high signal-to-noise ratio(SNR)of 35.78 ***,the feasibility of SLPP dry electrodes for long-term biopotential monitoring and biopotential-based human-machine interface control of household appliances was verified.

关键词： graphene-embedded elastomers low conductivity loss process highly flexible and stretchable electrophoretic deposition electroencephalography-electrocardiography-electromyography(EEG-ECG-EMG)monitoring

Stereological study of the effects of vitamin E on testis structure in rats treated with para-nonylphenol

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Asian Journal of Andrology 2009年第4期11卷 508-516页

作者： M Soleimani Mehranjani A Noorafshan HR Momeni MH Abnosi M Mahmoodi M Anvari sm Hoseini Biology Department Arak University Arak 38156 Iran Anatomy Department Shiraz University of Medical Sciences Shiraz 71348 Iran Anatomy Department Research and Clinical Center for Infertility Shahid Sadoughi University of Medical Sciences Yazd 89195-999 Iran

This study was organized to see whether vitamin E, as a strong antioxidant, could affect the abnormalities of testis structure caused by para-nonylphenol （p-NP） during its development. A total of 32 female Wistar rats after mating were divided into four groups （n = 8）： control, vitamin E （100 mg kg^-1 per day）, p-NP （250 mg kg^-1 per day） and p-NP ＋ vitamin E. The rats were treated from the seventh day of pregnancy till the twenty-first day. After weaning, the male pups were divided into the same groups and were treated orally for 90 days. Finally, the right testis was fixed, processed, stained and studied using stereological methods. The weight and volume of testis, volume of seminiferous tubules and its diameter, thickness of the basement membrane, height of the germinal epithelium, total number of types A and B spermatogonia, spermatocyte, spermatid and Sertoli cells were significantly reduced in p-NP group when compared with other groups. Co-administration of vitamin E and p-NP compensated for the adverse effects of p-NP on the above parameters. In addition, treatment with only vitamin E caused a significant increase in diameter, basement membrane thickness and height of germinal epithelium, number of spermatogonia and spermatocytes. Co-administration of vitamin E with p-NP could prevent the adverse effects ofp-NP on the testis structure during its development.

关键词： development para-nonylphenol stereology testis vitamin E

CTGF, intestinal stellate cells and carcinoid fi brogenesis

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World Journal of Gastroenterology 2007年第39期13卷 5208-5216页

作者： M Kidd IM Modlin MD Shapiro RL Camp sm Mane W Usinger JR Murren Departments of Surgery Yale University School of Medicine New Haven Connecticut 06520-8062 United States Departments of Pathology Yale University School of Medicine New Haven Connecticut 06520-8062 United States Departments of Affymetrix Resource Keck Biotechnology Resource Laboratory Yale University School of Medicine New Haven Connecticut 06520-8062 United States Fibrogen Inc San Francisco CA United States Departments of Medical Oncology Yale University School of Medicine New Haven Connecticut 06520-8062 United States

AIM： To investigate the role of small intestinal carcinoid tumor-derived fibrotic mediators, TGFβ1 and CTGF, in the mediation of fibrosis via activation of an ＂intestinal＂ stellate cell. METHODS： GI carcinoid tumors were collected for Q RT-PCR analysis of CTGF and TGFβ1. Markers of stellate cell desmoplasia were identified in peritoneal fibrosis by immunohistochemistry and stellate cells cultured from fresh resected fibrotic tissue. CTGF and TGFβ1 were evaluated using quantitative tissue array profiling （AQUA analysis） in a GI carcinoid tissue microarray （TMA） with immunostaining and correlated with clinical and histologically documented fibrosis. Serum CTGF was analyzed using a sandwich ELISA assay. RESULTS： Message levels of both CTGF and TGFβ1 in SI carcinoid tumors were significantly increased （〉 2-fold, P 〈 0.05） versus normal mucosa and gastric （non-fibrotic） carcinoids. Activated stellate cells and markers of stellate cell-mediated fibrosis （vimentin, desmin） were identified in histological fibrosis. An intestinal stellate cell was immunocytochemically and biochemically characterized and its TGFβ1 （10-7M） initiated CTGF transcription response （〉 3-fold, P 〈 0.05） demonstrated. In SI carcinoid tumor patients with documented fibrosis, TMA analysis demonstrated higher CTGF immunostaining （AQUA Score： 92 ± 8, P 〈0.05）, as well as elevated TGFβ1 （90.6 ± 4.4, P 〈 0.05）. Plasma CTGF （normal 12.5 ± 2.6 ng/mL） was increased in SI carcinoid tumor patients （31 ± 10 ng/mL, P 〈 0.05） compared to non-fibrotic GI carcinoids （〈 15 ng/mL） CONCLUSION： SI carcinoid tumor fibrosis is a CTGF/ TGFβl-mediated stellate cell-driven fibrotic response. The delineation of the biology of fibrosis will facilitate diagnosis and enable development of agents to obviate its local and systemic complications.

关键词： Carcinoid Connective tissue growth factor fibrosis small intestine Stellate cell TGFI