Computationally Assisted Structural Elucidation of Cembranoids from the Soft Coral Sarcophyton tortuosum

A persistent study on soft coral Sarcophyton tortuosum resulted in the characterization of two new cembranolides, tortuolides A and B (1 and 2), and a new related diterpene, epi-sarcophytonolide Q. Their structures were determined not only by extensive spectroscopic analysis but also by DFT calculations of ECD and NMR data, the latter of which was combined with statistical analysis methods, e.g., DP4+ and J-DP4 approaches. Anti-inflammatory and cytotoxicity activities were evaluated in this study.     

低温逆境下喷施氯化钙与热激对不知火杂柑果实生理生化的影响

果实钙含量与低温伤害有着密切的关系,主要机制在于钙能防止果实的细胞膜损伤和渗漏,稳定膜结构和维持膜的完整性。胞外Ca^2＋功能通过保护质膜的稳定性,使质膜具有较好的离子选择通透性,还可能对一些胞外酶或膜蛋白起调节作用。近年的研究表明,热激（非致死温度的热锻炼）处理能提高多种植物抗低温逆境的能力,还能引起胞内Ca^2＋浓度迅速（1分钟之内）升高,因此可以认为,Ca^2＋可能是启动热激反应的胞内关键因子。不知火杂柑品质优良,已有多篇文章对其进行研究。     

用PCR检测副溶血性弧菌耐热溶血素基因

根据副溶血性弧菌的耐热溶血素基因（ｔｄｈ）设计了２对引物，经聚合酶链式反应（ＰＣＲ）检测，所有１８株神奈川试验阳性副溶血性弧菌均呈阳性反应，而６株神奈川试验阴性副溶血性弧菌呈阴性反应，其他９种（３４株）弧菌和８株其他革兰氏阴性菌也呈阴性反应。检测敏感性可达２ＣＦＵ的副溶血性弧菌。     

进一步深化闽台农业合作 共同建设海峡西岸经济区

本文通过对闽台农业合作发展现状及其作用的分析,并根据新形势发展的需要,提出了深化闽台农业合作领域的新思路。     

塔落岩黄芪、细枝岩黄芪及其变异型的生理特性研究

本文研究了毛乌素沙漠地区塔落岩黄芪和细枝岩黄芪及其变异型的生理学特性。结果表明,塔落岩黄芪和细枝岩黄芪各与其变异型之间在生理特性方面存在着极其显著的差异。     

畜禽养殖场环境微生物致病性和耐药性调查研究

为了解掌握养殖场中环境微生物对养殖业和公共卫生造成的影响,初步对我国养殖场环境微生物进行了研究。对吉林、湖北等省份的部分养猪场和养鸡场环境采样,并进行大肠杆菌和沙门氏菌分离鉴定,同时对从鸡舍和猪舍内分离大肠杆菌和沙门氏菌进行动物致病性实验及对13种抗生素的耐药性实验。实验结果表明,所有实验的沙门氏菌和90.7%的大肠杆菌菌株对小白鼠有致病性;所有分离菌株对磺胺类药物的耐药性非常严重,其次是对四环素,对其他药物也有不同程度的耐药性。     

Regulation of fibroblast growth factor 9 on the differentiation of goat intramuscular adipocytes

It has been found that fibroblast growth factor receptor (FGF-FGFR) signaling can regulate the expression of adipocyte differentiation genes. FGF9 is one of the members of FGFs that mainly binds receptors FGFR2 and FGFR3. FGF9 is highly expressed in the adipose tissue of humans and mice, but there are few reports on the role of FGF9 in goat intramuscular adipocyte differentiation. Therefore, this study explored the effect of FGF9 on adipocyte differentiation through cell culture, interference, and overexpression. The expression of receptors FGFR1–FGFR4 in adipocyte differentiation and their effects on differentiation were detected to screen receptor gene of FGF9. Finally, the interaction between FGF9 and the receptor was tested by cotransfection. Our results showed that FGF9 interacts with FGFR2 to inhibit goat intramuscular adipocyte differentiation by regulating peroxisome proliferator-activated receptor gamma (PPARγ) and preadipocyte factor 1 (Pref1), which is a data support for subsequent pathway research.     

购犬应当选择好的繁殖者

当养犬爱好者想给自己挑选一头爱犬时,怎样选择小犬将会是一个至关重要的问题.笔者认为,了解小犬的饲养繁殖者很重要.因为小犬的饲养繁殖者直接关系到犬的质量.……     

肉仔鸡腹水综合征的病理形态学观察

近年来 ,本地区肉仔鸡生产发展迅速 ,鸡群时常发生腹水综合征。现将腹水综合征的病理形态学观察报告于后。1　发病情况　本病一年四季均有发生 ,尤以冬季、早春多发 ,临诊上常见 5日龄肉仔鸡开始发病死亡 ,每日死亡数不等 ,随着日龄的增长而增加 ,以 4～ 6周龄的发病死亡最多。     

昆虫唾液腺的研究进展

昆虫唾腺是昆虫消化系统中重要的器官,不同的昆虫唾腺形态各异,功能也有差别;完全变态昆虫幼虫的唾腺由胚胎皮细胞内陷而成,成虫唾腺由成虫唾腺芽发育而成,幼虫的唾腺在昆虫变态发育过程中会发生退化、消亡,其为程序性细胞死亡过程。本文对昆虫唾液腺的形态、功能及其在变态发育过程中发生程序性细胞死亡的情况进行概述。