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Parity violation and neutrino mass

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Nuclear Science and Techniques 2002年第3期13卷 129-133页

作者： Tsao Chang(CSPAR, University of Alabama, Huntsville, AL 35899, USA hoff lu Research Institute, Shanghai 200041) USA hoff lu Research Institute

Besides the fact of parity violation in weak interactions,based on evidences from neutrino oscillation and tritium beta decay,a natural conjecture is that neutrinos may be spacelike particles with a tiny proper mass.A Dirac-type equation for spacelike neutrinos is further investigated and its solutions are *** equation can be written in two spinor equations coupled together via nonzero proper mass while respecting maximum parity violation.

关键词：宇称破缺类空中微子中微子质量

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DISSIPATION FUNCTION OF COMPRESSIBLE FluIDS

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中国物理学报 1951年第2期 145-149页

作者： hoff lu Physics Department Chekiang University Hangchow

An expression is given for the part of dissipation function that is due to volume viscosity asintroduced in our viscoclastic *** is shown to be in accordance with the results of our theory ofsound *** features of this... 详细信息

关键词： DISSIPATION FUNCTION OF COMPRESSIBLE FluIDS very

ON VOluME VISCOSITY AND ACOUSTIC DISPERSION PHENOMENA

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中国物理学报 1951年第1期 5-13页

作者： hoff. lu Physics Department Chckiang Univcrsity Hangchow

Our bulk-visco-elastic theory is extended to the case,as recently discovered in ultrasonic absorptionmeasurements,in which there are present more than one relaxation *** multi-relaxationaltheory is applied to the study of acoustic dispersion *** bearing of our relaxationaltheory in general on classical hydrodynamics is further *** calculations fromcertain available experimental data are given and their indications discussed.

关键词： ON VOluME VISCOSITY AND ACOUSTIC DISPERSION PHENOMENA

SPONTANEOUS FISSION OF URANIUM

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Science China Mathematics 1952年第1期 77-84页

作者： hoff lu HSUAN-LING TSAO Chekiang University Chekiang University

An attempt has been made to determine the half-life for spontaneous fission for the "average uranium atom" with an argon-filled parallel-plate ionization chamber, employing the method of electron collection. A simple method of analyzing and extrapolating the observed fission counts from uranium deposits of various thicknesses has yielded the value （4.2±0.6）×1016years for this half-life. The mean range of fission fragments in uranium oxide is thereby found to be about 7.5 mg of uranium per cm2.

关键词： uranium fission collection attempt filled thereby chamber boron counts coated

PHENOMENOLOGICAL THEORIES OF BULK VISCOSITY

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中国物理学报 1950年第1期 365-375页

作者： hoff lu Physics Department, University of Chekiang, Hangchow

A relaxational bulk visco-elastic theory is formulated,leading to an equation recentlyassumed by Hall.A derivation is given of an expression for the coefficient of sound attenuationresulting from both shearing and bul... 详细信息

关键词： PHENOMENOLOGICAL THEORIES OF BULK VISCOSITY 鲁一 Rev exp 一吾

ON THE EMC EFFECT AND QUARK-GluON MODEL OF NUCLEI

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Chinese Physics Letters 1985年第6期2卷 285-288页

作者： BI Pin-zhen hoff lu Department of Physics(II) Fudan UniversityShanghai

In this paper,we investigate the quark distributions in nuclei^(1,7) based on the parton model,the effect of gluons and the experimental data of proton structure.

关键词： structure. quark

关於流体的容变粘滞弹性理论及其在声吸收现象中的应用

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物理学报 1956年第1期 5-19页

作者：卢鹤绂复旦大学物理系北京大学

在这篇论文里我们证明,与某些作者所了解的不同,我们的流体的容变粘滞弹性理论不仅仅是在结构弛豫的情况中有效,而是对所有三种弛豫——热弛豫、结构弛豫与化学弛豫——都是同样有效的。从我们的容变不可逆性方程可以推到Herzfeld与Ric... 详细信息

在这篇论文里我们证明,与某些作者所了解的不同,我们的流体的容变粘滞弹性理论不仅仅是在结构弛豫的情况中有效,而是对所有三种弛豫——热弛豫、结构弛豫与化学弛豫——都是同样有效的。从我们的容变不可逆性方程可以推到Herzfeld与Rice原为热弛豫所假定的热不可逆性方程。又可以证明的是在化学弛豫的情况中我们的容变不可逆性方程也包含着Liebermann由分子运动理论考究所得到的化学不可逆性方程。关于这理论在声吸收及速变现象中的应用,我们证明利用适当的热力学考究便可以从我们的压缩性理论所给的结果直接推到在热弛豫情况下有效的Bourgin-Kneser方程及在化学弛豫情况下可以有效的Liebermann方程。这个推导并揭发出来Liebermann的声吸收方程仅对液体说可以是一个良好的近似。我们附带地指出,在气体的情况中,某些已发表的声吸收及速变的实量结果的准确度已可以使我们从这些结果来算定气体的静态与立刻两压缩系数β0及β∞,从而确定热容量的两比值γ0及γ∞与外态内态两热容量Ce及Ci。这样我们又能从这些结果取得一些有关分子构造及分子碰撞过程中能量转移的结论。最后,我们讨论了我们的容变粘滞系数的定义的适当性。

关键词：方程不可逆性弛豫分子粘滞弹性理论数理经济学流体

Gastric fundoplication with endoscopic technique:A novel approach for gastroesophageal reflux disease treatment

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World Journal of Gastrointestinal Endoscopy 2024年第10期16卷 557-565页

作者： Eyad Gadour Anna Carolina hoff Department of Gastroenterology and Hepatology King Abdulaziz Hospital-National GuardAhsa 31982Saudi Arabia Internal Medicine Zamzam University CollegeSchool of MedicineKhartoum 11113Sudan Bariatric Endoscopy Angioskope ClinicSão Josédos Campos 12243-680São PauloBrazil

BACKGROUND Gastric fundoplication with endoscopic technique(GFET)is an innovative approach to managing gastroesophageal reflux disease(GERD).This minimally invasive procedure utilizes the GEN-2 Apollo endosuture device and Olympus H2T180 gastroscope to perform partial fundoplication by strategically placing Prolene 2-0 sutures at the 11,7,5,1,and 3 o’clock positions around the gastroesophageal *** To evaluate whether GFET enhances the lower esophageal sphincter function by creating comprehensive plication to improve the barrier against *** This single-center prospective study included patients undergoing *** beginning GFET,pH metrics and subsequent manometric measurements were *** analysis of variance was performed to determine statistically significant differences between quality of life(QOL)and DeMeester scores at the time of the procedure and 6 and 12 months ***’sχ2 test was performed to identify statistically significant differences between categorical variables at the time of the procedure and 6 and 12 months *** Eighteen participants were enrolled(11 males and 7 females;mean age,35 years).More than 70%had an initial Hill grade of *** adverse event was recorded after the *** patient underwent valve reinforcement at 12 *** mean QOL score was markedly higher at the time of the procedure(39.9±4.0)compared to those at 6 and 12 months postoperatively(PluSION GFET is a minimally invasive alternative to traditional surgical interventions and endoscopic techniques for managing *** research is warranted to validate its long-term efficacy and effectiveness over existing treatments.

关键词： Gastric fundoplication with endoscopic technique Gastroesophageal reflux disease Therapeutic endoscopy

关於热能中子所致铀235分裂时发出的中子数目的讨论

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物理学报 1955年第3期 199-205页

作者：卢鹤绂姚震黄复旦大学物理系

一.引言每次U235核获得热能中子后分裂为两核时所发射的中子数的平均数值v首先由von Halban,Joliot及Kowarski实验测出,他们肯定这数值是大于1,并且可达到3.5,其后多人用各种方法量度此数值,所得结果散布于1.5至6。

关键词：雨核平均中子数原裂成核