Results 101 to 110 of about 1,886,537 (208)

关于研究动物寄生线虫的一些基本方法

open access: yes, 1963
<正> 动物寄生线虫种类很多,有不少种类严重地危害人畜的健康,对医学和农业都有密切关系。研究寄生线虫可以帮助我們了解各种寄生线虫的种类、分布及其对人畜的危害情况,借此作出防治措施,逐漸予以消灭,以增进人畜的健康。检查动物寄生线虫的检查,通常采用下面两种方法: 1.完全剖检法在准备剖检动物以前 ...
徐(山乃)南, 伍惠生
core  

Emerging MBenes for Energy Technologies

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT The escalating global demand for sustainable energy is driving the search for transformative materials that transcend the limitations of conventional systems. Two‐dimensional (2D) transition metal borides (MBenes) have recently emerged as a compelling class, distinguished by unique electronic structures, tunable surface chemistry, and ...
Yingrui Ding   +5 more
wiley   +1 more source

一种净化污水的生物-生态组合方法及装置

open access: yes, 2011
本实用新型公开了一种用于净化污水的生物-生态组合的装置,动态膜生物 反应器分别与配水/调节池、集水池相连,集水池与复合垂直流人工湿地相连, 在配水/调节池中装有污水泵;生物反应器通过水阀上的管道与污水泵相连,生 物反应器通过第二水阀与流量计连接,压力表分别与流量计、有机玻璃外壳相连, 水阀分别与流量计、穿孔曝气管相连,压力表分别与曝气机和流量计相连,生物 反应器通过管道与有机玻璃外壳相连,水阀上的管道分别与无机陶瓷膜、集水池 相连,水阀上的管道分别与集水池、复合垂直流人工湿地相连。本实用新型结构 简单 ...
贺锋   +4 more
core  

Ultralight N‐Doped Interconnected Porous Carbon From Lignin: Synergistic Structural and Doping Engineering for High‐Performance Electromagnetic Wave Absorption

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT The development of lightweight, high‐attenuation, and broadband carbon‐based electromagnetic wave absorbers is hindered by the intrinsic trade‐off between impedance matching and dielectric dissipation. Herein, we report a facile and scalable synthesis of N‐doped lignin‐derived interconnected porous carbon (Nx‐LIPC) via hydrogen‐bond self ...
Bin‐Peng Zhang   +7 more
wiley   +1 more source

中国象牙禁贸政策对其野生动物执法成本的影响

open access: yes野生动物学报, 2018
中国的象牙商业性禁贸政策是中国为保护野生大象种群、维护生物多样性的新举措; 野生动物执法成本则是影响象牙商业性禁贸政策目标实现与否的关键因素之一。从长远考察,该政策将遏制非法象牙贸易的发生进而降低野生动物执法成本; 但在该政策实施初期,由于合法象牙供应的消失,会导致部分象牙需求可能转向非法象牙贸易,从而刺激非法象牙贸易反弹,最终导致野生动物执法成本增加。因此,在象牙商业性禁贸政策实施初期,增加野生动物执法人员培训、执法设备购置、执法专项行动、国际合作等成本是必要的 ...
姜 南 王邱文
doaj  

生物科技公司技術入股出資之研究

open access: yes, 2013
生物科技產業的發展不同於電子業與傳統的製造代工業,生物科技產業重視不斷的創新與發明,國內生物科技產業受法令的諸多限制,發展遭遇瓶頸,生技新藥產業發展條例的施行,在法令鬆綁下,有助於未來生物科技產業的發展,挹注新的研發創新能量,各界期盼生物科技產業未來成為帶動台灣經濟轉型的主力產業,創造另一個經濟奇蹟 ...
陳麗娟
core  

Predictive performance of Fetal Medicine Foundation first‐trimester screening algorithm for pre‐eclampsia according to conception mode

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 6, Page 806-814, June 2026.
ABSTRACT Objective To investigate the incidence of pre‐eclampsia (PE) and the predictive performance of the Fetal Medicine Foundation (FMF) first‐trimester PE screening algorithm across pregnancies conceived using assisted reproductive technology (ART), after ovulation induction (OI) and through spontaneous conception (SC).
A. S. L. Kjaer   +23 more
wiley   +1 more source

混凝—生物铁法处理维生素B1生产废水

open access: yesGongye shui chuli, 2008
采用混凝—生物铁法处理维生素B1生产废水,确定了混凝剂的种类及最佳投加量,研究了水力停留时间、溶解氧和pH对生物铁法处理效果的影响,得到了混凝—生物铁法处理维生素B1生产废水的最佳工况条件。
冯雷雨, 孙力平, 严媛媛
doaj  

一种微生物油脂的分离方法

open access: yes, 2010
本发明公开了一种微生物油脂的分离方法,是从产油微生物发酵液中直接分离提取油脂并联产菌渣的方法,属于生物工程下游后处理技术领域。本发明的技术方案如下:将产油微生物发酵液与有机溶剂按一定比例混合拌浸提一定时间,进行固液分离操作,对有机溶剂相去除溶剂,得到油脂;对固体相进行干燥得到菌渣。本发明工艺简单、操作条件温和、油脂提取收率高、菌渣质量好、耗能低,有利于进行规模化工业生产 ...
赵宗保, 赵鑫
core  

Root exudates mediate microorganisms to improve rhizosphere nutrient availability and crop productivity under straw mulching and slow‐release nitrogen fertilizer

open access: yesFunctional Ecology, Volume 40, Issue 6, Page 1725-1739, June 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Root exudates play a key role as signals and nutrients in mediating plant–microbe communication. However, critical knowledge gaps remain regarding how root exudates mediate soil–microbe–plant interactions to regulate crop yield under long‐term straw mulching combined ...
Jiajie Song   +7 more
wiley   +1 more source

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