Results 41 to 50 of about 84,650 (211)

さつまいもの加熱調理直後、冷蔵保存及び再加熱によるレジスタントスターチ量の変化 [PDF]

open access: yes, 2019
Resistant starch(RS)escapes digestion until reaching colon and acts like dietary fiber. Recently,many studies suggest that RS, in addition to dietary fiber, may be beneficial for our health.
亀井 文, 高橋 遥
core   +1 more source

Effects of parachute science on local research capacity 降落伞科学对当地研究能力的影响

open access: yesConservation Biology, EarlyView.
Abstract Strengthening research capacity is essential to address the global biodiversity crisis. Yet, parachute science often undermines this goal, and its prevalence, costs, and benefits are unclear. We analyzed 13,502 publications on primate research that we extracted from Scopus (1960–2022) to evaluate the effects of parachute science on local ...
Li Yang   +11 more
wiley   +1 more source

局部根系干旱条件下分蘖期水稻对供氮形态的生物学响应

open access: yesShuitu Baochi Xuebao, 2005
采用室内分根营养液培养及PEG模拟水分胁迫的方法,研究不同氮素形态(NH4 -N、NO3--N、NH4 -N/NO3--N比为50/50)对水稻局部根系遭遇水分胁迫后的生物学响应状况。结果表明,在非水分胁迫的条件下,供应NO3--N营养相对促进分蘖期水稻的根系发育,而供应NH4 -N营养相对促进分蘖期水稻的地上部发育;在局部根系受到水分胁迫的条件下,NH4 -N和NO3--N混合营养水稻生物量增量分别比全NO3--N和全NH4 -N营养水稻高31.7%和37.7%,其中地上部生物量增量也分别比全NO3--
周毅 郭世伟 沈其荣
doaj   +2 more sources

石羊河中游荒漠绿洲区土壤水分的分布特征

open access: yesShuitu Baochi Xuebao, 2007
通过田间实验,研究了不同土壤层颗粒组成、土壤水分的分布特征及不同土壤层间土壤水分的关联性。结果表明:(1)土壤颗粒组成决定了不同土壤层的持水性能,是导致土壤水的分布及运动方式发生变化,影响水分在土壤中滞留时间的根本原因,土壤层中的砂砾所占百分数越大,粘粒含量就越少,含水率就越小,壤土中的土壤水分滞留时间远大于砂质土壤。(2)试验区3m内土壤层可分为水分散失带、水分滞留带和水分过渡带,水分滞留带是土壤水分暂时贮存的重要土层,也是为植被提供深层土壤水分的直接来源,对植被的生长及农作物生产有重要的影响 ...
李王成   +4 more
doaj  

A link between increased temperature and avian body condition in a logged tropical forest

open access: yesConservation Biology, EarlyView.
Abstract The combined effects of anthropogenic disturbances, such as logging and climate change, remain poorly understood; yet, they are the main threats to tropical biodiversity. Most tropical African countries lack long‐term climate data, so climate impacts on biodiversity cannot be assessed.
Moreen Uwimbabazi   +7 more
wiley   +1 more source

Distribution, scale, and drivers of mass mortality events in Europe's freshwater bivalves

open access: yesConservation Biology, EarlyView.
Abstract Mass mortality events (MMEs) are decimating populations and compromising key ecosystem functions around the globe. One taxon particularly vulnerable to MMEs is freshwater bivalve mollusks. This group has important ecosystem engineering capacities and includes highly threatened and highly invasive taxa.
Daniel A. Cossey   +39 more
wiley   +1 more source

How much biotic nativeness matters across human demographic groups

open access: yesConservation Biology, EarlyView.
Abstract Many central concepts of conservation biology—such as nativeness—are structured by ecological and social factors. However, the social consequences of using these concepts to make conservation decisions remain inadequately understood. Some researchers argue that nativeness, rather than acting as an objective proxy for important ecological ...
Harold N. Eyster, Rachelle K. Gould
wiley   +1 more source

黄土区人工林地水分供耗特点与林分生产力研究

open access: yesShuitu Baochi Xuebao, 1999
通过定位观测,分析了黄土区人工刺槐和油松林地供水与耗水关系、土壤水分动态及林木生长情况。结果表明人工刺槐和油松林4,5,6三个月林地土壤水分消耗大于供给,水分供耗矛盾突出,土壤贮水减少;雨季水分供给充足,土壤贮水增加;在干旱季节和年份,相同条件下,密度大的林分林地水分供耗矛盾突出,林地水分亏损严重;不同坡向,水分亏损量大小顺序为阳坡>半阳坡>阴坡;0~300 cm土层土壤水分调查显示,阳坡、半阳坡密度较大的中林林分林地土壤含水量较低,出现干化现象;从水分生产力来看,由于林地水分供应不足 ...
魏天兴 朱金兆
doaj  

サキュウチ ドジョウ オ モチイタ ソバ ニタイスル ヒリョウ ノ ヨウメン サンプ ニツイテ ダイ3ポウ : ドジョウ スイブン ト ソバ コミ ノ ガンチッソブツ ナラビニ タンスイカブツ トノ カンケイ ニツイテ [PDF]

open access: yes, 1959
著者等(宍戸・本間)は,第1報において水分の不足を来たし易い砂丘地のような土壌に栽植された作物に,葉面撤布を実施する場合には,その効果を高めるために土壌水分を考慮して行うべきことを述べたが,今回は第1報と同様の土壌状態において夏蕎麦を栽植し,これに尿素の葉面撤布を行い,土壌水分と夏蕎麦の生育,子実の収量,茎葉中の全窒素,子実の含窒素物(全窒素,蛋白態窒素,可溶態窒素)ならびに炭水化物(全糖,還元糖,デキストリン,残余糖,澱粉)との関係について一つの資料を得ようとして本実験を行った ...
佐藤 勝之   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy