作者: Institution 時間: 2025-3-21 20:59 作者: 彎曲的人 時間: 2025-3-22 02:07 作者: breadth 時間: 2025-3-22 07:21 作者: 對待 時間: 2025-3-22 09:37 作者: 引水渠 時間: 2025-3-22 14:49 作者: 文件夾 時間: 2025-3-22 19:46 作者: gospel 時間: 2025-3-23 00:35
A. S. Crafts,C. L. Foyg the ethical, cultural, and societal dimensions of anthropogenic global changes...Geoethics identifies and orients responsible behaviors and actions in the management of natural processes, redefining the human interaction with the Earth system based on a critical, scientifically grounded, and pragm作者: 使困惑 時間: 2025-3-23 05:12
S. Dormal,H. Hurtigon in loss of life, but damage to property, infrastructure and livelihoods continues to increase, which shows that disasters are not events generated by nature itself, but are the result of the application of inappropriate development models, which do not consider the society and nature relationship作者: 欲望小妹 時間: 2025-3-23 05:37 作者: 咆哮 時間: 2025-3-23 13:40
d biosphere, continued with its natural dynamics. We humans multiply quickly and we occupy more and more space and need more and more natural resources. Thus, in the field of Earth Sciences, our economic activities interfere with the operation of this system on an unprecedented scale. Scientists tal作者: 改良 時間: 2025-3-23 14:04 作者: 藥物 時間: 2025-3-23 19:04 作者: 的’ 時間: 2025-3-24 00:57
Pesticide residue analysis by oxygen flask combustion,by shaking an alkaline solution contained in the flask and analysis of the resulting solution followed. This procedure has been modified by . (1960) and . and . (1961) for direct combustion of evaporated crop extracts containing chlorinated pesticides.作者: 可憎 時間: 2025-3-24 03:57 作者: INCH 時間: 2025-3-24 09:09 作者: 斷言 時間: 2025-3-24 11:55 作者: infringe 時間: 2025-3-24 15:43 作者: Connotation 時間: 2025-3-24 19:37
The use of fluorometric measurements for determination of pesticide residues,he residue chemist to explore every possible means of physical detection which is applicable to submicrogram quantities of material. The use of fluorometric methods is of value in this field because it is possible to measure accurately quantities of material which are onlv a tenth, a hundredth, or e作者: 品牌 時間: 2025-3-25 01:57
Pesticide residue analysis by microcoulometric gas chromatography, combination of these methods has not been used previously. Coulson .. (1960) have developed a singularly rapid and sensitive method through instrumentation for the determination of pesticide residues containing halogen or sulfur, making use of these principles. The microcoulometric gas chromatograp作者: 漂浮 時間: 2025-3-25 03:31
Some important properties of pesticide deposits on various surfaces,in problems in insect control with the materials then available became acute. Scale insects on citrus had developed resistance to hydrogen cyanide in various areas and oil sprays were employed in its place. But the margin was narrow between the amount needed for insect control and that which injured作者: 瘙癢 時間: 2025-3-25 10:16 作者: tenuous 時間: 2025-3-25 13:45
The chemical and physical nature of plant surfaces in relation to the use of pesticides and to theieneficial side are the great many instances of increased production that have resulted. On the other side are the many misuses that have resulted in injuries and death, and the wide array of residue problems of varying degrees of seriousness. The nature of plant surfaces is important from both aspec作者: 艱苦地移動 時間: 2025-3-25 16:41
Principles for the establishment of pesticide residue tolerances,ed for appropriate action. The concept of establishing safe limits for chemicals, both those produced by man and those of natural origin is not new or novel. In recent years the increase in the amount and number of pesticide chemicals introduced into the environment of man and his animals for use in作者: NEG 時間: 2025-3-25 21:19
Pesticide residue analysis by oxygen flask combustion,by shaking an alkaline solution contained in the flask and analysis of the resulting solution followed. This procedure has been modified by . (1960) and . and . (1961) for direct combustion of evaporated crop extracts containing chlorinated pesticides.作者: 浪蕩子 時間: 2025-3-26 03:01
Some important properties of pesticide deposits on various surfaces, the trees. Hence much attention was paid to formulations and dosages and deposits upon various parts of a sprayed tree. To a somewhat lesser degree, the same situation had come about in the use of lime-sulfur solution for control of other scale insects on deciduous trees.作者: analogous 時間: 2025-3-26 05:49
Insecticide residues in olive oils and table olives from efforts to control the olive fly,ese nations throughout the world, and for some of them it constitutes one of the most important economic resources. As an illustration, it will suffice to say that Italy alone has 165 million olive trees capable of producing each year about 350,000 tons of oil, worth around 155 billion Lire or 250 million dollars (Min. Agr. Foreste-Italy, 1960).作者: Indebted 時間: 2025-3-26 09:50 作者: 多節(jié) 時間: 2025-3-26 13:16
Pesticide residue analysis by microcoulometric gas chromatography,ccuracy and sensitivity is obtained with this instrument with little or no cleanup of sample extracts. Residues of 0.05 to 100 p.p.m. are easily found by varying the size of sample but the MCGC is not limited to this range.作者: graphy 時間: 2025-3-26 19:30
ion and manufacture, yet without surveillance and intelligent control some of those that persist could at times conceivably endanger the public health. The object of "Residue Reviews" is to provide concise, critical reviews of timely advances, philosophy, and significant areas of accomplished or nee作者: 定點 時間: 2025-3-26 23:09 作者: 積習(xí)難改 時間: 2025-3-27 05:06
The use of fluorometric measurements for determination of pesticide residues,metric methods is of value in this field because it is possible to measure accurately quantities of material which are onlv a tenth, a hundredth, or even a thousandth of the smallest amounts measurable by classical colorimetric procedures.作者: 暴露他抗議 時間: 2025-3-27 06:04 作者: instructive 時間: 2025-3-27 09:44 作者: 人類學(xué)家 時間: 2025-3-27 15:44
Charles H. Mahoneyg Nazca Plate, which adds a complexity to the tectonic history of this region. Understanding the connection between the initiation and kinematics of this extensional crustal-scale fault set within and parallel to a contractional margin is an area of active research. The Quaternary geologic record pr作者: deadlock 時間: 2025-3-27 17:45 作者: 全等 時間: 2025-3-28 00:31 作者: pus840 時間: 2025-3-28 03:54 作者: 我們的面粉 時間: 2025-3-28 08:53 作者: AGOG 時間: 2025-3-28 11:09 作者: FISC 時間: 2025-3-28 15:42 作者: Traumatic-Grief 時間: 2025-3-28 19:42 作者: LIMIT 時間: 2025-3-28 23:01
Carroll C. Cassilfactors, providing insights and perspectives from social science and the humanities. This book offers an unprecedentedly comprehensive overview of the state-of-the-art knowledge about the geo-environmental changes in the Cordillera Blanca..978-3-031-58247-9978-3-031-58245-5Series ISSN 2946-5710 Series E-ISSN 2946-5729 作者: grudging 時間: 2025-3-29 03:23
The chemical and physical nature of plant surfaces in relation to the use of pesticides and to theito their distribution and metabolic fate in plants is extremely difficult. It is apparent that many of the phenomena which are involved in the retention, absorption, accumulation and persistence of pesticides are not well understood. Not only do the physical and chemical properties of compounds and 作者: Thrombolysis 時間: 2025-3-29 09:19
Principles for the establishment of pesticide residue tolerances,d for law enforcement purposes. Unfortunately, when published, these numerical values induce an hypnotic attachment to their significance, while by contrast the principles and procedures by which they are established are not universally understood. Since knowledge in many aspects of this field of pe作者: nostrum 時間: 2025-3-29 13:20
Conference proceedings 1962ther food-additive problems are also appropriate subject matter. The justification for the preparation of any review for this book- series is that it deals with some aspect of the many real problems arising from the presence of residues of foreign chemicals in foodstuffs. The scope of "Residue Revie
