Results 41 to 50 of about 1,411,542 (193)
Compliance in Regulatory Gray Areas: The Case of the Organic Seed Standard
ABSTRACT Adaptive regulations, designed to balance flexibility with accountability, can embed provisions that unintentionally leave room for firms to shirk on their responsibilities by exploiting flexibility. We call these provisions “regulatory gray areas,” and ask: how should we understand (non‐)compliance in adaptive regulatory settings?
Liza Wood +3 more
wiley +1 more source
本实用新型公开一种气体分水排水器,有分水器本体,在分水器本体的上端设有气体进口及气体出口,分水器本体的中部有离心分水滤芯,底部有排水口;在分水器本体的下端设有液位传感器,加设电磁阀与排水口相通,并通过控制单元与液位传感器电连接。本实用新型通过电磁阀的开启与关闭,完成系统的排水与阻气,在正常的系统压力下(0~1MPa)均可使用,适用压力范围宽;对气体的密封性好,不会产生气体泄露现象,节约气体,同时消除了由于泄露易燃易爆气体所带来的安全隐患 ...
回晓康 +6 more
core
深覆盖层坝址上的高心墙堆石坝,在河床覆盖层中常设置两道混凝土防渗墙防渗。采用笔者开发的有限元软件.参照砂卵石覆盖层深度近50m的某心墙堆石坝工程的情况.分析了主、副防渗墙6种设置方案中坝基的稳定渗流场,得到了主墙、副墙和覆盖层的水头分担比例.所有方案中河床覆盖层上的水头小于3%。当主、副两道墙下部灌浆情况相同,端部之间设置灌浆帷幕封堵绕渗时.副墙承担的水头接近主墙;如果取消封堵绕渗的帷幕.副墙承担的水头下降到总水头的20%~30%:而副墙底部和主、副墙两端均不设帷幕的情况 ...
吴梦喜, 伍小玉, 胡小红
core +2 more sources
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
ABSTRACT This paper examines the practices ordinary social media users employ to influence the content served to them by platform algorithms, and the relationship between these practices and levels of algorithmic literacy. Practices were documented across TikTok, Facebook, Instagram, Twitter (now X), YouTube and Reddit during 65 sessions, conducted as ...
Agata Stepnik, Joanne Gray
wiley +1 more source
ABSTRACT Although the Philippines is gaining growing recognition as an effective site for English learning, especially among Japanese and Korean students, critical attention must be paid to the instrumentalization of Filipino instructors and the country, and the racialized discourse and practice.
Aika Ishige
wiley +1 more source
本发明公开了一种植物根系吸收土壤水分过程的测定方法,采用可拆卸的土柱,土柱内种植有植物,在土柱中间安放土壤水分测量管,并将土柱放置于田间土坑中;植物根系密度垂直分布可以通过定期卸开土柱分层取土洗根、扫描根而获得,实际植物蒸腾量定时称重获得,土柱每天至少要称量 1次,根据相关理论原理和实际精确测定的实验资料,综合蒸腾速率、根系密度分布、土壤水势、土壤水分含量、土壤非饱和导水率等各敏感因子,根据质量守恒,确定蒸腾量在根系层土壤剖面上按一定的权重因子分配下的根系吸水函数,采用根系吸水速率反求方法 ...
樊军,齐丽彬,邵明安,王全九
core
ABSTRACT Agricultural development initiatives in sub‐Saharan Africa have emphasized improved crop varieties as a pathway to food security, resilience, and rural poverty reduction. However, empirical evidence often focuses narrowly on plot‐level outcomes and overlooks whole‐farm effects and the substantial heterogeneity in farmers' management practices,
Kodjo Kondo +4 more
wiley +1 more source
眾所週知,植物的歧異現象深受外在條件的影響。禾木科植物的分酶已有許多的研究報告,分酶與收穫之間的關係、主宰分酶的外在條件的研究等等,不論是由純植物生理學的角度、以及實用的方面,都是非常重要的。根據以往的研究成果,分酶與收穫之間的關係密切,一般說來分酶的數量增加的話,一定面積或一株的收穫量也有隨之增加的傾向。並且,在水稻分酶與外界條件之間的關係也是,迄今有灌溉水與陽光的相關研究累積。但是由於這些研究成果都在日本進行調查,在品種、氣溫、土質殊異的臺灣也有進行相同研究的必要性 ...
小山貴之
core
ABSTRACT Biochemical oxygen demand (BOD) remains a core indicator of organic pollution in freshwater monitoring, but its role in water policy and practice is changing as water‐quality assessment moves toward predictive, integrative, and decision‐support approaches.
Isadora Favero Roque Cenci +5 more
wiley +1 more source

