Adversity and psychosocial stress are involved in aging through the following pathways. psychological stress enhances the nerve system to secrete endocrine mediators (hormones). Mitochondrial respiration mediates energy production stimulated by binding to these hormones to their receptors. Energy produced by mitochondria accelerates metabolism and, in its turn, leads to increases in reactive oxygen species (ROS) of free radicals. Cellular stress and accumulation of damage can result from an excess of ROS. Accumulation of damage comprises damages in telomeric and nontelomeric DNA, in addition to mitochondrial DNA. Mitochondrial DNA damage plays an important role in increasing the pathway of p53/p21. The expression of the PGC-1α gene is inhi

Recent research has shown that a Deoxyribonucleic Acid (DNA) has ability to be used to discover diseases in human body as its function can be used for an intrusion-detection system (IDS) to detect attacks against computer system and networks traffics. Three main factor influenced the accuracy of IDS based on DNA sequence, which is DNA encoding method, STR keys and classification method to classify the correctness of proposed method. The pioneer idea on attempt a DNA sequence for intrusion detection system is using a normal signature sequence with alignment threshold value, later used DNA encoding based cryptography, however the detection rate result is very low. Since the network traffic consists of 41 attributes, therefore we proposed the

Cryptography is the technology of protecting information and communication by means of encoding the sending information. Existing methods often operate within predetermined mathematical structures which can be subject to pattern recognition and which are lack biological randomness. To address these challenges, this paper introduced a new bio-inspired cryptography approach to protect text messages using the coding mechanisms of DNA and RNA materials. The encryption system consists of six steps: encoding the plaintext message into DNA sequences, transcribing DNA into RNA, applying the complementary base pairing, scrambling RNA segments, optional reverse transcription, and encoding the resulting DNA-RNA characters into ciphertext. Rand

This work aims to develop a secure lightweight cipher algorithm for constrained devices. A secure communication among constrained devices is a critical issue during the data transmission from the client to the server devices. Lightweight cipher algorithms are defined as a secure solution for constrained devices that require low computational functions and small memory. In contrast, most lightweight algorithms suffer from the trade-off between complexity and speed in order to produce robust cipher algorithm. The PRESENT cipher has been successfully experimented on as a lightweight cryptography algorithm, which transcends other ciphers in terms of its computational processing that required low complexity operations. The mathematical model of

This research aims at studying a contemporary and modern phenomenon in the Science of management in general and in the field of organizational behavior in private, The organizational learning and managerial empowerment in a governmental organization :"The General Company of Electric Industries" .The dimensions of organizational learning have been defined (Learning Dynamics، organization transformation, individuals empowerment, knowledge management and Technology application) as wells as the dimensions of managerial empowerment (possessing the information and its availability– Independency and the freedom of conduct and knowledge possession) Information has been gathered by a questionnaire distributed on a sample of professiona

هدفَ البحث الى معرفة دور برامج السخرية التلفزيونية بتشكيل صورة السياسي العراقي، حيث تلخصت مشكلة الدراسة بالتساؤل الرئيس: ما دور السخرية في برامج التلفزيون بتشكيل صورة السياسي العراقي، وتنتمي هذه الدراسة إلى البحوث الوصفية، وقد استخدم الباحث المنهج المسحي، واستمارة الاستبانة أداة رئيسة لجمع المعلومات والبيانات، فضلًا عن الملاحظة والمقياس، واعتمد أيضًا على نظرية الغرس الثقافي دليلًا علميًا لتوجيه الب

الملخص: منذ نهاية الحرب العالمية الثانية ولغاية الآن عجزت روسيا واليابان عن إبرام معاهدة تنهي رسمياً الأعمال العدائية بين البلدين، وتنهي تنازعهما حول جزر المحيط الهادئ المعروفة يابانيا بالأقاليم الشمالية، وروسياً بجزر الكوريل الجنوبية. ومع الغزو الروسي لأوكرانيا زادت علاقات البلدين تدهورا، وتوقفت مساعي تطويرها التي بدأها رئيس الوزراء الياباني الراحل شينزو آبي ، ما يثير التساؤل حول مستقبل العلاقة بي