نتایج جستجو برای: greenhouse producer

تعداد نتایج: 44188  

2010
MARIUS CONSTANTIN POPESCU MIRCEA GRIGORIU DOINA CORNELIA DINU

The main greenhouse gases (GHGs) producer is represented by the fossil burning systems. The paper presents the effect on the GHGs emission combined with the economic effects of a new pumping system method of automatic mixing of hot and cold water circulated with variable speed driving pumps and adjustable vanes. Considering the potential economic and environmental effects combined with the soci...

Journal: :Adnan menderes üniversitesi ziraat fakültesi dergisi 2022

Bu çalışmada domates üretiminin yoğun olarak yapıldığı Muğla ili Seydikemer, Fethiye ve Ortaca ilçelerinde örtü altı yetiştiriciliği yapan üreticilerin yetiştiricilik deneyimleri, karşılaştıkları fitopatolojik sorunlar, bitki koruma uygulamaları konusunda bilgi düzeylerinin tarımsal ilaç kullanımındaki eğilimlerinin belirlenmesi amaçlanmıştır. amaçla, 2019 yılında basit tesadüfi örnekleme yönte...

Journal: :پژوهش های حبوبات ایران 0
محمد قربانی محسن جمالی پور علیرضا کوچکی ناصر شاهنوشی

introduction earth's atmosphere plays an important role in preventing the temperature decrease. one of the principal factors of environmental pollution and the main source of earth's climate and biodiversity changes is greenhouse gas emissions from various sources, particularly agricultural sector. agriculture sector is considered as a major source of greenhouse gas sequestration, including me...

2011
Cutler J. Cleveland Peter A. O ’ Connor

The two methods of processing synthetic crude from organic marlstone in demonstration or small-scale commercial status in the U.S. are in situ extraction and surface retorting. The considerable uncertainty surrounding the technological characterization, resource characterization, and choice of the system boundary for oil shale operations indicate that oil shale is only a minor net energy produc...

Journal: :Waste management 2008
M B Vanotti A A Szogi C A Vives

Trading of greenhouse gas (GHG) emission reductions is an attractive approach to help producers implement cleaner treatment technologies to replace current anaerobic lagoons. Our objectives were to estimate greenhouse gas (GHG) emission reductions from implementation of aerobic technology in USA swine farms. Emission reductions were calculated using the approved United Nations framework convent...

Journal: :مهندسی صنایع 0
عالیه کاظمی استادیار گروه مدیریت صنعتی- دانشکده مدیریت- دانشگاه تهران محمدرضا مهرگان دانشیار گروه مدیریت صنعتی- دانشکده مدیریت- دانشگاه تهران حامد شکوری گنجوی دانشیار گروه مهندسی صنایع- پردیس دانشکده¬های فنی- دانشگاه تهران

this research presents a mathematical model for the optimal allocation of oil and gas to different sectors in iran using operations research techniques. sectors are residential, commercial, transportation, industries, agriculture, exports, injection to oil reservoirs and power plants as a secondary energy producer. optimal allocation of energy resources to end-users from 2011 to 2021 has been d...

Journal: :Mathematics and Computers in Simulation 2010
Gabriel Aguilera Venegas José Luis Galán García Rafael Madrid Antonio Manuel Martínez Yolanda Padilla Pedro Rodríguez Cielos

In this work we present an application developed in Derive 6 to compose counterpoints for a given melody (“cantus firmus”). The result is non deterministic, so different counterpoints can be generated for a fixed melody, all of them obeying classical rules of counterpoint. It is also possible that the counterpoint could not be generated, in this case, backtracking techniques have been implement...

2009
Alfredo Bautista Ma del Puy Pérez Echeverría J. Ignacio Pozo Bárbara M. Brizuela

Musical scores are some of the most important learning tools for musicians’ acquisition of musical knowledge. However, despite their educational relevance, very little is known about how music students conceive of these cultural external representations. Given that these conceptions might act as mediators of students’ learning approaches, the importance of knowing these conceptions seems eviden...

2014
Andrew Chen Alvaro Sanchez Lei Dai Jeff Gore

Ecosystems can undergo sudden shifts to undesirable states, but recent studies with simple single-species ecosystems have demonstrated that advance warning can be provided by the slowing down of population dynamics near a tipping point. However, it is unclear how this 'critical slowing down' will manifest in ecosystems with strong interactions between their components. Here we probe the dynamic...

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