نتایج جستجو برای: high temperature low time

تعداد نتایج: 4426284  

2018
A Malik A Setiawan A Suhandi A Permanasari

The purpose of this study is to develop HOT (Higher Order Thinking) Lab–based practicum guide that improves pre-service physics teachers’ creative thinking skills. The research method used 3D-1I model (Define, Design, Develop and Implementation). The subjects of this study are 40 students of Physics Education Program UIN Sunan Gunung Djati Bandung. The results showed that the HOT Lab-based prac...

This study aims to extract Glycyrrhizic Acid (GA) from Glycyrrhiza glabra L. (licorice) using a novel, high efficiency, and low-cost extraction method. Water was chosen as the proper solvent for the extraction process to eliminate the requirement of harmful and toxic solvents, prepare an environmentally friendly process, and reduce the costs. The effect of differe...

2013
Maksim Khadkevich Maurizio Omologo

This paper focuses on cover song identification among datasets potentially containing millions of songs. A compact representation of music contents plays an important role in large-scale analysis and retrieval. The proposed approach is based on high-level summarization of musical songs using chord profiles. Search is performed in two steps. In the first step, the Locality Sensitive Hashing (LHS...

ژورنال: :international journal of electrical and electronics engineering 0
hassan faraji baghtash ahmad ayatollahiii khalil monfaredi

a novel ultra-high compliance, low power, very accurate and high output impedance current output stage (cos) with extremely high output current drive capability is proposed in this paper. the principle of operation of this unique structure is discussed, its most important formulas are derived and its outstanding performance is verified by hspice simulation in tsmc 0.18µm cmos, bsim3, and level4...

Journal: :تحقیقات مهندسی کشاورزی 0
نسیبه ایزدی خواه دانشجوی کارشناسی ارشد حسین مبلی استاد دانشکده مهندسی و فناوری کشاورزی دانشگاه تهران عباس اکبرنیا عضو هیئت علمی سازمان پژوهشهای علمی و صنعتی ایران حجت احمدی استادیار دانشکده مهندسی و فناوری کشاورزی دانشگاه تهران شاهین رفیعی دانشیار دانشکده مهندسی و فناوری کشاورزی دانشگاه تهران

olive oil extraction methods and technology can affect the quality and quantity of the extracted oil. in this study, qualitative and quantitative parameters were investigated for oil extracted using a hammer crusher at 720 and 1450 rpm at 30°, 40°, 60° c mixing temperatures. the data were analyzed using a complete randomized block factorial design using spss software with three replications. th...

2004
J J Lin S M Huang Y H Lin T C Lee H Liu X X Zhang R S Chen Y S Huang

We have systematically measured the electrical transport properties of several RuO2 and IrO2 single crystals over a wide temperature range from 300 K down to 0.3 K to study the conduction mechanisms in these oxides. Our measured resistivities are in close agreement with the recent band-theory calculations for these materials. The characteristic temperatures for the acoustic-mode and optical-mod...

Journal: :تحقیقات جغرافیایی 0
مجید منتظری گروه جغرافیای طبیعی دانشگاه اصفهان سید ابوالفضل مسعودیان گروه جغرافیای طبیعی دانشگاه اصفهان

most scientists believe that the phenomenon of global warming occurred, however, in the case of the occurrence of this phenomenon by some environmental scientists have raised doubts. they are questioning global warming by arguing that the temperature recorded at the weather stations cannot be representative of the occurrence of the temperature rise. because with the passage of time and the incr...

2005
B. Yerozolimsky A. Steyerl O. Kwon V. Luschikov A. Strelkov P. Geltenbort N. Achiwa A. Pichlmaier P. Fierlinger

A new type of per-fluorinated polymer, "Low Temperature Fomblin," has been tested as a wall coating in an ultracold neutron (UCN) storage experiment using a gravitational storage system. The data show a UCN reflection loss coefficient η as low as ≈ 5 × 10(-6) in the temperature range 105 K to 150 K. We plan to use this oil in a new type of neutron lifetime measurement, where a bellows system ("...

2015
CATHERINE M. NAUD DEREK J. POSSELT

The distribution of cloud and precipitation properties across oceanic extratropical cyclone cold fronts is examined using four years of combinedCloudSat radar andCALIPSO lidar retrievals. The global annual mean cloud and precipitation distributions show that low-level clouds are ubiquitous in the postfrontal zone while higher-level cloud frequency and precipitation peak in the warm sector along...

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