Synthesis of heat-resistant fish gelatin gel by radiation-induced crosslinking

Gelatin is a kind of protein obtained by the partial hydrolysis of collagen derived from bone, skin and scale of animals such as porcine, bovine, and fish. It has been widely used as gelling agent in many fields such as food, cosmetic, pharmaceutical, and medical because of its multifunctional continent: biological origin, non-antigenicity, biocompatibility and biodegradability. In recent years, there are many researches that improve the heat-resistant at 37 °C and gel strength of porcine and bovine gelatin through the crosslinking by irradiation method without toxic chemicals as crosslinker, their elastic modulus were insufficient for the practical use of biomedical device (10 - 100 kPa). However, products made of mammalian gelatins have concern with ethic problem or religious issue for clinical medicine and tissue engineering. From this necessary demand, fish gelatin can replace and resolve this disadvantage of porcine and bovine ones. Although melting point of fish gelatin gel was lower than mammalian one, recently, it have been reported successfully obtained gelatin having high melting point of 24 °C from Tilapia fish scale by pre-treatment. In this work, hydrogels derived from fish gelatin with different molecular weights were produced by quantum beam in order to improve their heat-resistant, production yields and mechanical property.The 13th meeting of the “Ionizing Radiation and Polymers” symposium (IRaP2018

双奇核~(172)Re高自旋态转动带结构实验研究

利用重离子熔合蒸发反应 14 9Sm (2 7Al,4nγ) 172 Re布居了形变双奇核 172 Re的高自旋态 ,用 12套带有BGO反康普顿抑制的高纯锗探测器阵列进行了在束γ实验测量 ,首次建立了形变双奇核172 Re由 3个转动带构成的高自旋态能级纲图 .研究和讨论了 3个转动带的结构特征 ,基于已有的高自旋态核结构知识并通过系统学比较和分析指出它们的准粒子组态分别为πh11 2 νi13 2 ,πh9 2 νi13 2 和π1 2 -[5 41] ν1 2 -[5 2 1].发现前两个转动带在自旋小于 18.5时其转动能级呈现反常的旋称劈裂

双奇核~(172)Re高自旋态实验研究

利用149Sm(27Al,4nγ)172Re反应布居了形变双奇核172Re的高自旋态,用12套带有BGO反康普顿抑制的高纯锗探测器阵列进行了在束γ实验测量,首次建立了172Re由3个转动带构成的高自旋态能级纲图.研究和讨论了3个转动带的结构特征,基于已有的高自旋态核结构知识并通过系统学比较和分析指出它们的准粒子组态分别为πh11/2 νi13/2,πh9/2 νi13/2和 π1/2-[541] ν1/2-[521].发现前两个转动带在自旋小于18时其转动能级呈现反常的旋称劈裂

双奇核~(172)Re的高自旋态；High Spin States in Odd-odd ~(172)Re

对149Sm(27Al,4n)172Re反应产生的172Re在束γ的实验数据进行了重新分析,新发现了可归属于172Re的3个转动带,由此建立了由6个转动带构成的172Re高自旋态能级纲图。依据相邻核的带结构知识和推转壳模型分析方法,对新发现的3个转动带的准粒子组态进行了指定,讨论了它们的转动特征