Results 41 to 50 of about 24,433 (172)

Optimization of mixed fermentation technology of Lactobacillus helveticus andLactobacillus rhamnosus based on high viable count [PDF]

open access: yes, 2016
以瑞士乳杆菌和鼠李糖乳杆菌混合发酵培养,利用两菌株细胞代谢的差异,以静置发酵24 h后得到的活菌数目为指标,通过单因素实验和正交实验,研究了瑞士乳杆菌和鼠李糖乳杆菌高活菌数混合发酵的最适发酵条件。结果表明,瑞士乳杆菌和鼠李糖乳杆菌高活菌数混合发酵的最优条件为:发酵温度37℃,初始pH=6.8,接种量6%,瑞士乳杆菌:鼠李糖乳杆菌=1∶2,瑞士乳杆菌优先接种3 h。最终得到乳酸菌总活菌数为7.2×10~9m L~(-1)。与在相同条件下单独发酵的瑞士乳杆菌和鼠李糖乳杆菌活菌数相比,分别提高了1∶8倍和10.
李敬龙   +3 more
core   +1 more source

Integrating Plant Tissue Culture and DNA Barcoding: Cutting‐Edge Technologies for Plant Conservation in Sri Lanka 整合植物组织培养与dna条形码技术:斯里兰卡植物保护的前沿技术

open access: yesIntegrative Conservation, Volume 4, Issue 4, Page 555-568, December 2025.
Sri Lanka's biodiversity is threatened by habitat loss, climate change, and ineffective traditional conservation methods. Integrating plant tissue culture and DNA barcoding offers scalable, precise tools for conserving rare and endemic species. This review emphasizes the potential of biotechnological approaches to enhance conservation accuracy and ...
Mylange Dona Kasundi Mekhala Gunasena   +2 more
wiley   +1 more source

繁殖期与非繁殖期麝鼠香腺中Atg2a和Atg9b基因转录水平分析

open access: yes野生动物学报, 2018
麝鼠是一种有很高经济价值的皮、香两用经济动物,其香腺发育机制至今未能阐明。本研究通过RT-qPCR检测繁殖期与非繁殖期麝鼠香腺中Atg2a和Atg9b基因的转录水平,结果显示非繁殖期两者转录水平分别约为繁殖期的43.7倍和16.6倍,提示麝鼠非繁殖期时香腺组织自噬水平增高。进而推测自噬机制在麝鼠非繁殖期香腺萎缩的过程中起到了重要的调节作用。
张 宇 吕鹏博 钱鑫慧 张博文 白素英
doaj  

Identifying priority areas for conservation to promote connectivity and mitigate the impacts of anthropogenic disturbance

open access: yesConservation Biology, Volume 39, Issue 6, December 2025.
Abstract As nations seek to expand protected area (PA) networks to cover 30% of land and seas by 2030 (30×30), there is an urgent need for systematic conservation planning and spatial prioritization that considers the broad range of ecological and socioeconomic factors influencing the persistence of biodiversity.
Edmond Sacre   +2 more
wiley   +1 more source

麝鼠TNFRSF13C和TNFRSF4基因表达分析

open access: yes野生动物学报, 2020
麝鼠(Ondatra zibethicus)是一种珍贵的毛皮动物和香料动物,在繁殖季节能分泌麝鼠香,而其香腺泌香机制尚不清楚。TNFRSF13C(BAFF受体)和TNFRSF4(OX40受体)基因是TNF受体超家族的成员,参与免疫调节、炎症、凋亡,还与自身免疫病和多种器官的形成有关。本研究通过RT-qPCR技术检测繁殖期与非繁殖期麝鼠的心、肝、肺、肾、睾丸、肌肉及香腺中TNFRSF13C和TNFRSF4基因的转录水平,结果显示两者在繁殖期和非繁殖期7个组织中均有表达,在繁殖期麝鼠的心、肝、肺、肾、睾丸 ...
廖光珍, 毕建鑫, 张钰, 白素英
doaj  

World Association for Veterinary Dermatology Consensus Statement for Diagnosis, and Evidence‐Based Clinical Practice Guidelines for Treatment and Prevention of Canine Leishmaniosis

open access: yesVeterinary Dermatology, Volume 36, Issue 6, Page 723-787, December 2025.
Hyperkeratosis of (a) the footpads and (b) the nasal planum. ABSTRACT Background Canine leishmaniosis (CanL) due to Leishmania infantum remains common, and veterinarians do not always follow scientifically sound approaches for diagnosis, treatment and prevention. Objectives To provide consensus guidelines for diagnosis and evidence‐based guidelines for
Manolis N. Saridomichelakis   +9 more
wiley   +1 more source

亚洲象的繁殖观察

open access: yes野生动物学报, 2010
济南动物园所饲养的亚洲象(Elephas maximus)于1997年首次繁殖成功,现已繁殖3胎3仔,幼象生长发育正常。在繁殖过程中,对亚洲象的发情、交配、妊娠、分娩、幼象发育等进行了详细观察,积累了亚洲象繁殖的资料和经验。
谢绪昌   +4 more
doaj  

山西芦芽山自然保护区鹪鹩繁殖生态观察

open access: yes野生动物学报, 2005
2001-2003年,在山西芦芽山自然保护区对14窝鹪鹩(Troglodytes troglodytes)的繁殖生态进行了观察,该鸟在本区3月份种群遇见率为2.27只/km,9月后为3.27只/km,繁殖后比繁殖前增长44.1%;繁殖期为4-8月,最早营巢期为4月22日,营巢期7d,窝卵数3-5枚,孵卵期13-14d,年繁殖力1.8只,孵化率为85.1%,成活率86.96%,巢内育雏14- 15d,巢外育雏7-8d。
王建萍   +3 more
doaj  

ナガスクジラ科鯨類の精巣における形態学的および組織学的構造とその繁殖特性 [PDF]

open access: yes, 2015
東京海洋大学博士学位論文 平成26年度(2014) 応用環境システム学 課程博士 甲第343号指導教員: 加藤秀弘全文公表年月日: 2018-05 ...
井上 聡子
core   +1 more source

大袋鼠人工饲养与繁殖的研究

open access: yes野生动物学报, 1993
通过十年研究,基本掌握了大袋鼠在人工饲养条件下生长、发育、繁殖的生态及其对饲养生境的需求,成功地完成了两种大袋鼠的连续繁殖,目前已繁殖子代第五代,十年共繁殖两种大袋鼠37只,繁殖价值达30万元以上,支援了广州、沈阳、武汉等七家城市动物园共14只大袋鼠。探讨了大袋鼠繁殖过程中的幼仔掉袋、人工育幼等难点问题。在对掉袋幼仔的急救处理及人工袋育幼等研究中均取得较好成果。
濮燕群
doaj  

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