Fact Sheet 106.pmd
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چکیده
Many of the basic concepts of green chemistry are familiar to pollution prevention practitioners. The concepts of substituting less hazardous materials into chemical formulations and reducing wastes have been around for many years. Green chemistry has taken these concepts and expanded the scope of possibilities by fully evaluating all aspects of chemical reactions, processes and formulations. This fact sheet is intended to introduce the concept of green chemistry to industry, academia and consumers and outline the positive environmental and economic benefits that result from implementation.
منابع مشابه
Activity in ventral and dorsal premotor cortex in response to predictable force-pulse perturbations in a precision grip task.
This study compared the responses of ventral and dorsal premotor cortex (PMv and PMd) neurons to predictable force-pulse perturbations applied during a precision grip. Three monkeys were trained to grasp an unseen instrumented object between the thumb and index finger and to lift and hold it stationary within a position window for 2-2.5 s. The grip and load forces and the object displacement we...
متن کاملکنترل همزمان شتاب و تغییرمکان لرزه ای سازه های نامتقارن چند طبقه با استفاده از میراگرهای جرمی غیر فعال (PMD)
مطالعات اخیر نشان داده که میراگر جرمی غیرفعال می تواند پاسخ تغییرمکان حداکثر سازه های نامتقارن رابه طور مناسبی کاهش دهد. ولی در اکثر سازه ها کاهش همزمان شتاب و تغییرمکان دو لبه از اهمیت بالاییبرخوردار است. در این مقاله کنترل لرزه ای ساختمانهای نامتقارن یک، چهار و هشت طبقه با خصوصیاتمختلف پیچشی با استفاده از میراگر جرمی با مشخصات و موقعیتهای مختلف مورد مطاله قرار گرفت. کاهشحداکثر تغییرمکان و شتا...
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Electron acceleration by fast magnetic reconnection in extragalactic jets is considered. A significant threedimensional magnetic field is assumed in the reconnecting current sheet where the particles are accelerated by the DC electric field. The character of electron orbits in the sheet is controled by the magnetic field that determines, in particular, the electron acceleration lengths < 10−2 p...
متن کاملThe electrocardiogram in Duchenne progressive muscular dystrophy.
Interpretation of the electrocardiogram in the Duchenne form of progressive muscular dystrophy (PMD) is still debated in the literature. The group studied consisted of 106 patients with the Duchenne type of PMD, aged 3 to 29 years. The duration of the disease varied from a few months to 15 years. One hundred one patients had abnormal electrocardiograms. These were of four types: type a (64 case...
متن کاملRoles of monkey premotor neuron classes in movement preparation and execution.
Dorsal premotor cortex (PMd) is known to be involved in the planning and execution of reaching movements. However, it is not understood how PMd plan activity-often present in the very same neurons that respond during movement-is prevented from itself producing movement. We investigated whether inhibitory interneurons might "gate" output from PMd, by maintaining high levels of inhibition during ...
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