Results 31 to 40 of about 1,305 (169)
On the Conservation Laws and Exact Solutions of a Modified Hunter‐Saxton Equation
Advances in Mathematical Physics, Volume 2014, Issue 1, 2014., 2014 We study the modified Hunter‐Saxton equation which arises in modelling of nematic liquid crystals. We obtain local conservation laws using the nonlocal conservation method and multiplier approach. In addition, using the relationship between conservation laws and Lie‐point symmetries, some reductions and exact solutions are obtained.
Sait San, Emrullah Yaşar, Fabien Gatti
wiley +1 more source
ชุมชนกับต้นทุนสุขภาวะจากมลพิษในนิคมอุตสาหกรรม: Community and Health Costs of Pollution in the Industrial Estate. [PDF]
, 2016 การศึกษาครั้งนี้มีวัตถุประสงค์เพื่อศึกษาต้นทุนสุขภาวะจากมลพิษในนิคมอุตสาหกรรมมาบตาพุด จังหวัดระยอง ซึ่งกลุ่มตัวอย่างที่ใช้ในการศึกษาครั้งนี้ คือ ครัวเรือนที่อาศัยอยู่ในบริเวณเทศบาลเมืองมาบตาพุด จังหวัดระยอง โดยการศึกษาในครั้งนี้สามารถแบ่งต้นทุนส ...
ตันติเวทย์, วรานันต์ +1 more
core +1 more source
Gender differences in adolescent school stress: A mixed‐method study
Journal of Research on Adolescence, Volume 35, Issue 1, March 2025.Abstract Previous research has consistently found higher school stress among girls. However, scientific understanding of the underlying factors that may explain those gender differences is limited. This study adopts a mixed‐method approach (QUANT → QUAL) to address this gap.
Irene García‐Moya +2 more
wiley +1 more source
An age‐dependent population equation with diffusion and delayed birth process
International Journal of Mathematics and Mathematical Sciences, Volume 2005, Issue 20, Page 3273-3289, 2005., 2005 We propose a new age‐dependent population equation which takes into account not only a delay in the birth process, but also other events that may take place during the time between conception and birth. Using semigroup theory, we discuss the well posedness and the asymptotic behavior of the solution.
G. Fragnelli
wiley +1 more source
Heme homeostasis and its regulation by hemoproteins in bacteria
mLife, Volume 3, Issue 3, Page 327-342, September 2024.Abstract Heme is an important cofactor and a regulatory molecule involved in various physiological processes in virtually all living cellular organisms, and it can also serve as the primary iron source for many bacteria, particularly pathogens. However, excess heme is cytotoxic to cells. In order to meet physiological needs while preventing deleterious
Yingxi Li, Sirui Han, Haichun Gao
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Linear neutral partial differential equations: a semigroup approach
International Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 23, Page 1433-1445, 2003., 2003 We study linear neutral PDEs of the form (∂/∂t)Fut = BFut + Φut, t ≥ 0; u0(t) = φ(t), t ≤ 0, where the function u(⋅) takes values in a Banach space X. Under appropriate conditions on the difference operator F and the delay operator Φ, we construct a C0‐semigroup on C0(ℝ−, X) yielding the solutions of the equation.
Rainer Nagel, Nguyen Thieu Huy
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Journal of Linguistic Anthropology, Volume 34, Issue 1, Page 23-44, May 2024.Abstract Hồ Chí Minh's extended essay Fixing the Way We Work, written in 1947 after he and other high‐ranking members of the recently formed DRV (Democratic Republic of Vietnam; Việt Nam Dân chủ Cộng hòa), had been forced to retreat from Hanoi to the uplands of Thái Nguyên province, elaborates on organizational and practical problems within the party ...
Jack Sidnell
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Night Blindness and Vitamin A Deficiency following Jejunoilieal Bypass Surgery
Canadian Journal of Gastroenterology and Hepatology, Volume 3, Issue 4, Page 138-140, 1989., 1989 A 42‐year‐old man who developed severe night blindness 15 years following jejunoileal bypass surgery for morbid obesity is described. Ophthamological testing, including dark adaptation, electroretinography and serum vitamin A levels, confirmed a diagnosis of vitamin A deficiency.
Paul C. Adams, Christopher L. Canny
wiley +1 more source
Abstract and Applied Analysis, Volume 2024, Issue 1, 2024.In this paper, under appropriate hypotheses, we have the existence of a solution semigroup of partial differential equations with delay operator. These equations are used to describe time–age‐structured cell cycle model. We also prove that the solution semigroup is a frequently hypercyclic semigroup.
Cheng-Hung Hung, Victor Kovtunenko
wiley +1 more source
Optimising steel hub location in Thailand [PDF]
Maejo International Journal of Science and Technology, 2012 The optimal location of a steel hub in Thailand was analysed by applying aspecific research methodology designed to evaluate locations near the seaports.
Sakaradhorn Boontaveeyuwat
doaj