نتایج جستجو برای: some methods including liquid nitrogen

تعداد نتایج: 3831053  

Journal: :Foods and Raw materials 2022

The present article introduces the problem of determining general structure beer as a complex system related biomolecules. objective was to establish correlation various quantities organic compounds in formulation.
 research featured samples filtered pasteurized obtained from retail chain shop Moscow (Russia). experiment relied on standard methods, including instrumental methods analysis, ...

Farideh Samadiyan Sina Mohammadi Aghdam,

In order to study effects of nitrogen fertilization and cultivars on some of traits of different barley an experiment was conducted at Isfahan in 2012. The experimental was split plot in a randomized complete block design with three replications. In this experiment, different levels of nitrogen in the main plots included four levels (0, 50, 100 and 150 N kg/ha (urea)) and barley cultivars inclu...

2015
Kazuya Shinmura Hideki Murakami Satoru Demura Satoshi Kato Katsuhito Yoshioka Hiroyuki Hayashi Noriaki Yokogawa Takashi Igarashi Moriyuki Fujii Noritaka Yonezawa Hiroyuki Tsuchiya

STUDY DESIGN A retrospective study. PURPOSE To evaluate the immunity-enhancing effect of implantation of a liquid nitrogen-treated tumor. OVERVIEW OF LITERATURE We have developed a new technique of implanting a tumor frozen in liquid nitrogen after posterior decompression and stabilization, with the aim of enhancing antitumor immunity in order to prolong the survival period of the patient. ...

Journal: :Journal of visualized experiments : JoVE 2018
Zoran Marinović Jelena Lujić Eszter Kása Zsolt Csenki Béla Urbányi Ákos Horváth

Current trends in science and biotechnology lead to creation of thousands of new lines in model organisms thereby leading to the necessity for new methods for safe storage of genetic resources beyond the common practices of keeping breeding colonies. The main purpose of this study was to adapt the needle immersed vitrification (NIV) procedure to cryopreserve whole zebrafish testes. Cryopreserva...

2011
Fábio Wildson Gurgel COSTA Gerly Anne de Castro BRITO Rosana Maria Andrade PESSOA Eduardo Costa STUDART-SOARES

OBJECTIVE The aim of this study was to evaluate the effects of liquid nitrogen cryosurgery on the femoral diaphysis of rats. MATERIAL AND METHODS The femoral diaphyses of 42 Wistar rats were exposed to three local and sequential applications of liquid nitrogen for 1 or 2 min, intercalated with periods of 5 min of passive thawing. The animals were sacrificed after 1, 2, 4 and 12 weeks and the ...

Journal: :Iranian journal of pathology 2015
Amir Hosein Jafarian Amin Rahpeyma Saeedeh Khajehahmadi

The glandular odontogenic cyst (GOC) is a rare lesion with odontogenic origin. It shows a propensity for recurrence revealed in 30% of all case. This investigation reports a case of recurrent GOC in a 35-year-old female in the anterior region of the maxilla, which is uncommon and discusses about IHC finding, surgical methods, and differential diagnosis. Under general anesthesia, peripheral bone...

Journal: :Human reproduction 2009
V Isachenko E Isachenko J M Weiss

Sir, In the challenging paper by Wang et al. (2008), the authors have reported about an effective method of vitrification of human ovarian tissue with direct contact of cells in liquid nitrogen, named needle immersed vitrification. Childbirth after cryopreservation of ovarian tissue is now a reality (Donnez et al., 2004; Demeestere et al., 2007; Meirow et al., 2007; Andersen et al., 2008) and t...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Young S Song Douglas Adler Feng Xu Emre Kayaalp Aida Nureddin Raymond M Anchan Richard L Maas Utkan Demirci

The vitrification of a liquid occurs when ice crystal formation is prevented in the cryogenic environment through ultrarapid cooling. In general, vitrification entails a large temperature difference between the liquid and its surrounding medium. In our droplet vitrification experiments, we observed that such vitrification events are accompanied by a Leidenfrost phenomenon, which impedes the hea...

ژورنال: علوم آب و خاک 2002
حسن نصیری مقدم, , رونالت مارکوارت, , فریبرز خواجه ‌علی, , محسن دانش مسگران, ,

Evaluation of uric acid contents of poultry excreta was examined for use in the estimation of apparent protein digestibility. Uric acid was determined either by high-performance liquid chromatography or by spectrophotometric method. A high-pressure liquid chromatographic assay was used with absorbance measured at 285 nm. The method used a reverse-phase system with a C18-bonded column (250*4.6 m...

2017
Christoph Kandlbinder Alice Fischerauer Mario Mösch Tobias Helling Gerhard Fischerauer Martin Siegl

The main and upper stages of heavy lift launchers for space applications are often fuelled by cryogenic liquids. In order to enable the re-ignition of a cryogenic upper stage for orbital changes, it is crucial to study the behaviour of these fluids in microgravity. As gaseous bubbles entering the fuel lines of the engine can cause the destruction of the engine, these bubbles are a risk for the ...

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