Liquid Nitrogen And Freezing
Mostrando 1-12 de 58 artigos, teses e dissertações.
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1. Freezing methods affect the characteristics of large yellow croaker (Pseudosciaena crocea): use of cryogenic freezing for long-term storage
Abstract Large yellow croaker (Pseudosciaena crocea) is the main coastal economic fish in China. After harvesting, the fish is rarely traded as the fresh product, but usually held in cold storage. Therefore, it is important to understand the quality changes occurring during preservation. In this study, freshly collected fishes were frozen by cryogenic (cabin
Food Sci. Technol. Publicado em: 2020-12
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2. Investigation of modified platelet-rich plasma (mPRP) in promoting the proliferation and differentiation of dental pulp stem cells from deciduous teeth
Stem cells from human exfoliated deciduous teeth (SHEDs) have great potential to treat various dental-related diseases in regenerative medicine. They are usually maintained with 10% fetal bovine serum (FBS) in vitro. Modified platelet-rich plasma (mPRP) would be a safe alternative to 10% FBS during SHEDs culture. Therefore, our study aimed to compare the pro
Braz J Med Biol Res. Publicado em: 01/09/2016
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3. Assessing the use of frozen pork meat in the manufacture of cooked ham
This study aimed to evaluate the effects of slow (–18 °C) and fast freezing (liquid nitrogen) of pork meat, and the use of exudate released upon thawing, on the physicochemical, color, rheological, microbiological, histological, and sensory characteristics of cooked ham. The meat samples were frozen at –18 °C and thawed after 22 weeks for the productio
Food Sci. Technol. Publicado em: 05/02/2016
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4. Drying of α-amylase by spray drying and freeze-drying - a comparative study
This study is aimed at comparing two traditional methods of drying of enzymes and at verifying the efficiency of each one and their advantages and disadvantages. The experiments were performed with a laboratory spray dryer and freeze-dryer using α-amylase as the model enzyme. An experimental design in star revealed that spray drying is mainly influenced by
Braz. J. Chem. Eng.. Publicado em: 2014-09
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5. Angiogenic effects of cryosurgery with liquid nitrogen on the normal skin of rats, through morphometric study
BACKGROUND:Cryosurgery is an efficient therapeutic technique used to treat benign and malignant cutaneous diseases. The primary active mechanism of cryosurgery is related to vascular effects on treated tissue. After a cryosurgical procedure, exuberant granulation tissue is formed at the injection site, probably as a result of angiogenic stimulation of the cr
An. Bras. Dermatol.. Publicado em: 2014-06
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6. Development of single tubing-type canister for cryo-storage of bull semen and their effect on sperm motility and viability
The objective of this study was to evaluate the potential of using single tubing-type canister on sperm quality. Semen was collected from the Bali cattle bull by electroejaculation technique and was cryopreserved in liquid nitrogen using slow freezing cryopreservation method. Two type of canister volume was used in this study; commercial canister (342.25π x
Braz. arch. biol. technol.. Publicado em: 2014-04
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7. Assessment of viability of sperm cells of Litopenaeus vannamei on cryopreservation
Aiming at assessing the cryopreservation potential of Litopenaeus vannamei sperm cells, 74 spermatophores were manually extracted from the sexually mature individuals. After the toxicity test to define the cryoprotectant concentration, suspensions of spermatic cells were cryopreserved in the groups in freezing solutions comprising different cryoprotectants s
Braz. arch. biol. technol.. Publicado em: 18/03/2014
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8. Aloenxerto ósseo cortical desvitalizado com nitrogênio líquido ¿ estudo experimental em ovelhas
Bone grafting is employed in veterinary orthopedics with a variety of purposes as for arthrodesis, spinal fusions, fracture repairs, treatment of delayed or non-unions, filling bone defects, supporting corrective osteotomy, and as replacement in limb sparing techniques for tumor resection. The allograft bone, in contrast to the autologous bone graft, is asso
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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9. Estudo dos efeitos celulares e vasculares da criocirurgia com nitrogênio líquido, na pele de ratos, por método histopatológico / The study of cellular and vascular effects of cryosurgery with liquid nitrogen, in rat skin, using the histopathological method
Cryosurgery is a very efficient therapeutic technique to treat benign and malignant cutaneous diseases. The primary active mechanism of cryosurgery is related to vascular effects in treated tissue. After a cryosurgical procedure, exuberant granulation tissue is formed at the injection site, probably as a result of angiogenic stimulation of the cryogen and in
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/12/2011
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10. Histomorphometric assessment of bone necrosis produced by two cryosurgery protocols using liquid nitrogen: an experimental study on rat femurs
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 sacrifice
Journal of Applied Oral Science. Publicado em: 2011-12
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11. Efeito da Adição de Dimetilformamida ao Diluente ACP-106 C Sobre as Características do Sêmen Canino Congelado. / Effect of Adding Dimethylformamide the ACP-106 C Diluent About Featured Canine Frozen Semen.
Several studies have been developed in the intention of already improving the protocols existent for the freezing of canine semen. With that the present work had two objectives: 1) to evaluate the effect of the addition of different dimethylformamide concentrations on the characteristics of the canine semen diluted in coconut water in the powder form (ACP-10
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/12/2009
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12. Effect of freezing methods on the properties of lyophilized porous silk fibroin membranes
Silk fibroin is a fibrous protein that has been extensively studied for application in the biomedical field, and has been used as a scaffold for bone tissue engineering. Biomaterials made of proteins are prone to physical and chemical degradation during storage; lyophilization, a drying method that consists of freezing and drying steps, is known to promote m
Materials Research. Publicado em: 2009-06