Results 111 to 120 of about 812,055 (158)

Ultra‐Weak Photon Emission as a By‐Product of Mitochondrial Oxidative Metabolism: Mechanisms, Limits, and Implications

Nanophotonics, Volume 15, Issue 20, 27 October 2026.
Mitochondrial oxidative metabolism generates ROS. Downstream chemiexcitation triplet carbonyls, singlet oxygen; produces ultra‐weak photon emission (UPE). Energetic bounds restrict well‐coupled respiration to extremely weak, red/NIR‐biased emission. Stronger visible UPE indicates elevated oxidative flux, linking measured photon counts to redox state ...
Samuel Crowther, Alice Attenborough, Frank Vollmer   +2 more
wiley   +1 more source

Avalanche Handbook

, 1953
This handbook has been prepared primarily for the guidance of Forest Officers concerned with the safety of skiers using winter sports areas within the national forests.
Atwater, Montgomery M.; Koziol, Felix C.
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End user and forecaster interpretations of the European Avalanche Danger Scale: a study of avalanche probability judgments in Scotland [PDF]

We investigate Scottish end users' and professional forecasters' risk perception in relation to the 5‐point European Avalanche Danger Scale by eliciting numerical estimates of the probability of triggering an avalanche. Our main findings are that neither
Miller, David L., Miller, David L, Comerford, David A, Ebert, Philip A., Diggins, Mark, Ebert, Philip A, Comerford, David A.   +6 more
core   +1 more source

Elliptic-Möbius S-boxes: A hybrid algebraic construction for cryptographic applications

Alexandria Engineering Journal
Substitution boxes (S-boxes) are the nonlinear core of block ciphers, and their design critically impacts resistance against cryptanalytic attacks. Existing approaches either use chaotic maps, which often exhibit structural weaknesses, or elliptic curve (
M. Awais Ehsan, Takreem Haider, Muhammad Ishaq   +2 more
doaj   +1 more source

Optimum Probing for Avalanche Victims

, 1967
The technological problems connected with the development of a "wonder searching instrument" are immense. Until science presents us with this instrument we must use classical search devices.
Perla, Ronald I.
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An optimized substitution box generator based on cubic pell curves and its application in image encryption

Scientific Reports
In today’s digital landscape, safeguarding confidential data from cyber threats and unauthorized breaches is more crucial than ever. A key component in modern cryptographic systems is the substitution box (S-box), which ensures data security through ...
Mohammad Abdul Mujeeb Khan, Naveed Ahmed Azam, Hailiza Kamarulhaili   +2 more
doaj   +1 more source

Method of Predicting Avalanche Danger from Snowfall Intensity in the Tien-Shan

, 1969
An examination of various mathematical methods used to determine avalanche ...
Shcherbakov, M.P.; translated by R.I. Perla.
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From Schreier graphs to secure s-boxes using a group-theoretic design framework

Scientific Reports
Secure substitution boxes (S-boxes) are a fundamental design element of modern symmetric cryptography because they provide the necessary nonlinearity to achieve confusion.
Abdul Razaq, Muhammad Ramzan, Qin Xin, Hanan Alolaiyan, Dilshad Alghazzawi   +4 more
doaj   +1 more source

Intelligent decision-making framework for selecting optimized substitution boxes in modern block cipher design

Scientific Reports
The nonlinear confusion component of block ciphers plays a crucial role in data secrecy, and choosing the best substitution box (S-box) is a difficult task since there are various competing cryptographic requirements.
Majid Khan
doaj   +1 more source

Encounter Probabilities for Avalanche Damage

, 1966
An analysis of the exposure of various commercial and industrial activities to avalanche danger and of the determination of an acceptable level of risk for such activities. Miscellaneous Report No.
LaChapelle, Edward R.
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