Symmetric Cryptosystem Based on Petri Net

يتضمن هذا البحث طريقة جديدة  تعتمد على شبكة بتري لتوليد مفتاح سري خاص .يستخدم  مؤشر الوصول الذي يشير الى البيانات الموجودة  في الشبكة كمفتاح للتشفير وفك التشفير للحصول على مفتاح معقد بشكل جيد. يستخدم كلا الطرفين (المرسل والمستقبل)  للتشفير وفك التشفيرشبكة ذات تصميم مطابق لتوليد نفس المفتاح . يتم اعادة ترتيب النص الصريح باستخدام جدول معين قبل عملية التجميع مع المفتاح لتوليد النص المشفرIn this wok, a novel approach based on ordinary Petri net is used to generate private key . The reachability marking  of petri net is used as encryption/decryption key to provide more complex key . The same ordinary Petri Nets models  are used for the sender(encryption) and  the receiver(decryption).The plaintext has been permutated  using  look-up table ,and XOR-ed with key to generate cipher tex

Burning Mouth Syndrome, Relationships with Some Systemic Medications (A clinical study among an Iraqi sample)

Despite the numbers of studies upon burning symptoms in patients with clinically healthy appearance of the oral mucosa, as well as burning mouth syndrome (BMS) itself, they both remain still challenging subjects. The aim of this study was arranged to evaluate the effects of some systemic medication in the occurrence of BMS in relation to other etiological factors that may share in causing this disease in an Iraqi sample. Out of eighty, fifty patients (28 female and 22 males) were selected as a study group, all of them suffered from BMS, clinical and laboratory examinations in addition to previous diagnosis for the patients on the referral forma were depending on identifying the etiological causes for the BMS. This study revealed that antihypertensive and antidepressant medications were more affecting among this studied Iraqi sample with BMS than other etiological factor

Enhancing the Efficacy of Adsorption-Based Carbon Storage Systems: A Finite Element Analysis Approach

Received: 19 January 2024. Revised: 14 March 2024. Accepted: 20 March 2024. Available online: 31 March 2024.In light of the International Energy Agency's (IEA) 2020 special report, which estimates the global capacity for carbon dioxide (CO2) storage to range between 8,000 and 55,000 gigatons, the imperative to enhance carbon storage efficiency and develop superior distribution systems has never been more critical. This investigation focuses on the optimization of adsorption-based carbon storage units through a comprehensive systems analysis, employing the finite element method within the COMSOL Multi-physics™ framework to devise a two-dimensional axisymmetric model that integrates energy, mass, and momentum conservation principles in accordance with thermodynamic constraints. The analysis entails examining the charging and discharging processes of the storage unit under a designated pressure of 9 MPa and an initial temperature of 302 K, with refrigeration provided by ice water. Findings from the simulation underscore the significance of observing pressure and temperature fluctuations during operational phases, revealing higher temperatures in the central region of the tank at the end of the charging cycle, contrasted with lower temperatures upon discharge completion. Moreover, a gradient in velocity is observed, diminishing from the entry point along the tank's axis. The study underscores the feasibility of storing significantly more CO2 than the 100 Gt projected by the IEA's "sustainable development" scenario by 2055, with land-based storage potential notably surpassing offshore capacities. The research advances by developing a predictive model for a novel CO2 adsorbent throughout the adsorption-desorption cycle, encompassing all relevant transport phenomena. This model is validated against extant data for H2 storage, facilitating predictions of pressure and temperature variations across different tank locations. This work not only contributes to the field by enhancing the understanding of thermal effects within carbon storage units but also emphasizes the role of advanced modeling techniques in bolstering environmental protection efforts through improved liquid carbon storage solutions

P53 long noncoding RNA regulatory network in cancer development

Studies have suggested that aberrant expression of lncRNAs as a molecular‐genomic signature may play important roles in cancer biology. Accordingly, it is important to elucidate the mechanisms by which the crosstalk between lncRNAs and p53 occurs in the development of numerous cancers. Here, we review how several classes of lncRNAs and p53 pathways are linked together in controlling the cell cycle and apoptosis in various cancer cells in both human and mouse model system

Utilization of animal solid waste for electricity generation in the northwest of Iran 3E analysis for one-year simulation

DATA AVAILABILITY : The data used to support the findings of this study are available from the corresponding author upon request.Today, the use of renewable energy is increasing day by day. The most susceptible to renewable energy is biomass energy because it depends directly on the size of the population and does not have the problems of other renewable energies such as lack of access day and night and constant change throughout the year. For this reason, animal solid waste has been used in the research to supply electrical energy to the study area. In this regard, the amount of animal waste is considered as a source of biomass input energy. HOMER software was used to simulate the system under study. To better compare the competitiveness of this energy, photovoltaic systems and wind turbines have been used as different scenarios of electrical energy production in the study area. The results of scenario analysis showed that in all designed systems, the highest amount of energy production was in July and was related to the hottest season of the year. Among hybrid systems, the biomass system has a higher priority than other systems due to the minimum cost of energy production and total net present cost (NPC). The amount of exhaust gas from the biomass system reached 53.5 kg/yr and the biomass-wind and biomass-wind-solar systems reached 52.5 kg/yr and 52.2 kg/yr, respectively. The surplus generated electricity also increases from 2.91% to 6.65% from the biomass-wind system to the biomass-with-solar system.http://www.hindawi.com/journals/ijceam2023Mechanical and Aeronautical Engineerin

Constructing public health policies in post crisis countries: lessons to learn from the associations between free-sugars consumption and diabetes, obesity and dental caries before, during and after sanctions in Iraq.

BACKGROUND: This article aims to provide evidence for an informed public health policy on free-sugar consumption in post-crisis countries. METHODS: Iraq was selected as a case study. A systematic search for published data on the prevalence/incidence of type-2 diabetes, overweight/obesity, dental caries and free-sugar consumption levels in Iraq was conducted using MEDLINE, the Iraqi Academic Scientific journals and relevant international organisations' websites. Comparable data before (1980-1990), during (1991-2002) and after (2003-2015) the United Nations sanctions (UNS) were included. RESULTS: Ten studies were included. Quality scores ranged between 3 and 7/8. Free-sugar consumption decreased dramatically during the UNS (from 50 to 16.3 kg/person/year) and started increasing afterwards (24.1 kg/person/year). Changes in type-2 diabetes, overweight/obesity and caries levels mirrored those of free-sugar consumption. Caries declined markedly during UNS and started increasing afterwards. Comparable data on diabetes and overweight/obesity were only available for the periods during and after the UNS. Both of these conditions started increasing with increased free-sugar consumption after lifting the UNS. CONCLUSIONS: There is a need to develop a public health policy in post-crisis countries to maintain the reduction in free-sugar consumption, and hence promote both general and dental health, by integrating the common risk factor approach into the social determinant framework

Trypsin-based diet for the growth indices of Spanish mackerel

To protect the sustainability of the aquaculture industry, fishmeal is being replaced with alternative feed ingredients such as plant-based protein components. However, most plant-based feedstuffs contain a wide array of anti-nutritional factors. These factors can potentially hinder nutrient consumption, which in turn can interfere with fish health and performance. Protease enzyme supplements can reverse the impacts of anti-nutritional factors and enhance fish growth. This study aimed to incorporate the trypsin enzyme into the food of Spanish mackerel and explore its effects on growth factors, body composition, and blood biochemical parameters. This study was a fully-randomized experiment with three treatments and three replications. This experiment was carried out as a completely randomized design with three treatments and three replications, and the trypsin enzyme was added to the fish diet at different levels: 0%, 0.015%, and 0.025%. For a timeframe of 60 days, the fish were given experimental diets. The growth indices considered were: specific growth rate (SGR), protein efficiency ratio (PER), condition factor (CF), feed conversion ratio (FCR), weight gain percentage (WGP), and hepatic steatosis index (HSI). The results showed that FCR, PER, SGR, and WGP at enzyme levels of 0.015% and 0.025% were substantially different from the control group