نتایج جستجو برای: some methods including liquid nitrogen

تعداد نتایج: 3831053  

Journal: :جنگل و فرآورده های چوب 0
محبتعلی نادری شهاب عضو هیئت علمی موسسه تحقیقات جنگلها و مراتع کشور مریم جبلی کارشناس پژوهشی موسسه تحقیقات جنگلها و مراتع کشور علی اشرف جعفری هیئت علمی موسسه تحقیقات جنگلها و مراتع کشور

wych elm (ulmus glabra hudson) is one of the forest species in hyrcanian forests of iran and considered as threatened species due to its narrow ecological range, over-exploitation, as well as dutch elm disease. in order to evaluate the possibility of cryopreservation of ulmus glabra seeds for long-term preservation, seeds were collected from natural habitats and three pre-treatment methods incl...

Journal: :journal of agricultural science and technology 2012
m. shatnawi

achillea millefolium belonging to the astreaceae family is an endangered medicinal plant of jordan and of its neighboring countries. as an alternative to seed propagation, an efficient micropropagation of a. millefolium and its subsequent rooting were developed as an option for its in vitro conservation. a maximum of 5.9 shoots per microshoot were obtained on murashige and skoog agar medium sup...

Journal: :Archives of ophthalmology 2009
Frederick W Fraunfelder

PURPOSE To report a case series of conjunctival lymphangiectasia treated with liquid nitrogen cryotherapy. METHODS A 1.5-mm Brymill cryoprobe was applied in a double freeze-thaw method after an incisional biopsy of a portion of the conjunctiva in patients with conjunctival lymphangiectasia. Freeze times were 1 to 2 seconds with thawing of 5 to 10 seconds between treatments. Patients were reex...

Journal: :Journal of Industrial & Engineering Chemistry 1916

Extended Abstract Introduction and Objective: To overcome the problems caused by animal feed shortages, efforts are made to increase the availability of nutrients and their digestibility, such as improving the nutritional value of forage plants through biological processing. Schizophyllum commune is an edible fungus of the basidiomycete’s family that has been used for biological processing of ...

2017
Wenjing Ding

Abstract—Liquid spray heat exchanger is the critical equipment of temperature regulating system by gaseous nitrogen which realizes the environment temperature in the range of -180 °C~+180 °C. Liquid nitrogen is atomized into smaller liquid drops through liquid nitrogen sprayer and then contacts with gaseous nitrogen to be cooled. By adjusting the pressure of liquid nitrogen and gaseous nitrogen...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1389

in reality, most structures involved in geotechnical engineering are three dimensional in nature, and although in many, plane strain or axisymmetric approximations are reasonable, there are some, for which 3-d treatment is required. the quantity of data, and the size of the various vectors and matrices involved in such analysis, increase dramatically. this has sever implications for computer r...

Journal: :Blood 1962
W R BRONSON M H McGINNISS

By WILLIAM R. BRONSON AND M .iiy H. McGINNIs5 With the technical aid of Robert J. Eisel A PANEL of erythrocytes of known antigenic structure has become increasingly important not only in experimental immunohematology but also in routine blood banking procedures. Cells kept at 4 C.’2 and glycerolated cells stored at -20 C.3’4 are frequently used for this purpose. Recently Strumia5 described a te...

Journal: :Transactions of the Iron and Steel Institute of Japan 1972

2015
Paulo de Camargo Moraes Rubens Gonçalves Teixeira Luiz Alexandre Thomaz José Luiz Cintra Junqueira Luciana Butini Oliveira

Several methods of treatment for plunging ranulas have been described in the literature, such as: surgical treatment including the excision of the sublingual gland followed by transoral drainage of the pluging ranula, needle aspiration, excision of the ranula, cryosurgery and CO(2) laser excision. Marsupialization and micro-marsupialisation can be also recommended primarily to treat oral ranula...

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