نتایج جستجو برای: when the temperature falls below zero degrees centigrade

تعداد نتایج: 16187438  

2008
Sebastian Scheffler

We study the phase structure of a 4D complex scalar field theory with a potential V (Φ) = | Λ 3 Φ −ΛΦ | 2 at zero and at finite temperature. The model is analyzed by mean-field and Monte Carlo methods. At zero temperature the theory falls in the universality class of the 4D Ising model when varying Λ. The situation is less clear-cut for variations w.r.t. Λ at large temperatures and variations w...

Journal: :shiraz journal of system management 0

this paper is devoted to the study of determining optimal process mean in system production with the two markets for the sale of goods. in this paper, we developed an absorbing markov chain model in production systems where all items are inspected %100 for conformance with their specification limits. when the value of the quality characteristic of an item falls below a lower limit, the item is ...

Journal: :Physical review. D, Particles and fields 1996
Lyth Stewart

In supersymmetric theories a eld can develop a vacuum expectation value M 10GeV, even though its mass m is of order 10 to 10GeV. The nite temperature in the early Universe can hold such a eld at zero, corresponding to a false vacuum with energy density V0 m 2 M . When the temperature falls below V 1=4 0 , the thermal energy density becomes negligible and an era of thermal in ation begins. It en...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی مهندسی 1389

the poor orientation of the restaurants toward the information technology has yet many unsolved issues in regards to the customers. one of these problems which lead the appeal list of later, and have a negative impact on the prestige of the restaurant is the case when the later does not respond on time to the customers’ needs, and which causes their dissatisfaction. this issue is really sensiti...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1381

deposite the different criticisms on contrastive analysis it has been proved that the results of it(when processed)can be usuful in a tefl environment,specially at the level of phonology.this study is an attempt to compare and contrast the sound systems of kurdish and english for pedagogical aims. the consonants,vowels,stress and intonation of the twolanguages are described by the same model-ta...

Journal: :iranian journal of basic medical sciences 0
elham khodaverdi department of pharmaceutics, school of pharmacy, mashhad university of medical sciences, mashhad, iran pharmaceutical research center, avicenna institute, mashhad university of medical sciences, mashhad, iran omid rajabi department of pharmaceutics, school of pharmacy, mashhad university of medical sciences, mashhad, iran pharmaceutical research center, avicenna institute, mashhad university of medical sciences, mashhad, iran farshad farhadi department of pharmaceutics, school of pharmacy, mashhad university of medical sciences, mashhad, iran afshin jalali department of pharmaceutics, school of pharmacy, mashhad university of medical sciences, mashhad, iran

objective(s) physiological changes in the body may be utilized as potential triggers for controlled drug delivery. based on these mechanisms, stimulus-responsive drug delivery has been developed. materials and methods in this study, a kind of poly (n-isopropylacrylamide-acrylamide) membrane was prepared by radical copolymerization. changes in swelling ratios and diameters of the membrane were i...

Journal: :JAMA 1992
P A Mackowiak S S Wasserman M M Levine

OBJECTIVE To evaluate critically Carl Wunderlich's axioms on clinical thermometry. DESIGN Descriptive analysis of baseline oral temperature data from volunteers participating in Shigella vaccine trials conducted at the University of Maryland Center for Vaccine Development, Baltimore. SETTING Inpatient clinical research unit. PARTICIPANTS One hundred forty-eight healthy men and women aged ...

2006

Clay minerals may be si<j'nifieant indieatoi's of earth processes. They form throufrh a range which involves at one extreme the action of compressed water vapor at a temperature of several hundred degrees centigrade, and at the other extreme, the action of atmospheric agencies at an ordinary temperature. Not recognized as original products of magmatic crystallization, clay minerals are prima fa...

The purpose of this study is predicting climate changes and investigating the effect of probable climate change on the growing degree-days in the northwest of Iran. For this purpose the climatic data of seven synoptic stations during a 25 years period (1985-2009) was collected including Oroomieh, Tabriz, Zanjan, Sanandaj, Ghazvin, Kermanshah, and Hamedan were used as the base period and thus te...

Journal: :Best practice & research. Clinical anaesthesiology 2008
Andrea Kurz

Perioperative hypothermia is a common and serious complication of anesthesia and surgery. Core body temperature, which is normally regulated to within a few tenths of a degree centigrade, can fall by as much as 6 degrees C during anesthesia. The combination of anesthetic-induced impairment of thermoregulatory control and exposure to a cool operating room environment causes most surgical patient...

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