Military Academy

About: Military Academy is a based out in . It is known for research contribution in the topics: Population & Context (language use). The organization has 2478 authors who have published 3003 publications receiving 33188 citations.

Factors Affecting the Process of Social Adaptation

Abstract: The studies on the social adaptation as a process reveal its characteristics and open new fields of discussion. Current paper presents and investigation on the concepts of social adaptation setting out its framework and on that basis goes further into the analyses of the major factors influencing this process. Main conclusions consider the contemporary understandings and pay special attention to the social needs of society and the relationships between social adaptation and socialization.

Removal of heavy metals from water using multistage functionalized multiwall carbon nanotubes

Abstract: The multistage synthesis of the multi-wall carbon nanotubes (MWCNT) modified with polyamidoamine dendrimers, A1/ and A2/MWCNT, capable of cation removal, is presented in this work, as well as novel ads­orbents based on these precursor materials and modified with goethite nano-deposit, α -FeOOH, A1/ and A2/MWCNT– α -FeO(OH) adsorbents used for As(V) removal. In a batch test, the influence of pH, contact time, initial ion concentration and tem­perature on adsorption efficiency were studied. Adsorption data modelling by the Langmuir isotherm, revealed good adsorption capacities (in mg g -1 ) of 18.8 for As(V) and 60.1 and 44.2 for Pb 2+ and Cd 2+ on A2/MWCNT, respectively. Also, 27.6 and 29.8 mg g -1 of As(V) on A1/ and A2/MWCNT– α -FeO(OH), respectively, were removed. Thermodynamic parameters showed that the ads­orp­tion is spontane­ous and endothermic processes. Results of the study of inf­luences of compet­itive ions: bicarbonate, sulfate, phosphate, silicate, chromate, fluoride and nat­ural organic matter (NOM), i.e. , humic acid (HA), showed the highest effect of phosphate on the decrease of arsenate adsorption. Time-dep­endent adsorption was best described by pseudo-second-order kinetic model and Weber–Morris model which predicted intra-particle diffusion as a rate-con­trolling step. Also, activation energy ( E a / kJ mol -1 ): 8.85 for Cd 2+ , 9.25 for Pb 2+ and 7.98 for As(V), were obtained from kinetic data.

Protective and therapeutic effects of cannabis plant extract on liver cancer induced by dimethylnitrosamine in mice

Abstract: Hepatocellular carcinomas will emerge as a major form of malignancy in the coming decades. When these tumors are in advanced stages, few therapeutic options are available. Therefore, it is essential to search for new treatment modalities to fight this disease. Aim Evaluate the possible protective and therapeutic effects of Cannabis extract on dimethylnitrosamine (DMNA)-induced hepatocarcinogenicity in mice. Methods Seventy-five male mice were divided into five groups of 15 each: group I mice received corn oil only as the control group; group II mice were injected intraperitoneally with DMNA (10 μg/kg body weight) weekly for 12 weeks; group III mice were pretreated orally with cannabis extract (0.5 ml/kg body weight) every other day for two weeks before the injection of DMNA, and continued until the end of the experiment (12 weeks); group IV mice were treated orally with cannabis extract every other day simultaneously with DMNA injection and continued until the end of the experiment; group V mice were treated orally with cannabis extract every other day after receiving the last intraperitoneal injection of DMNA. A real time PCR was used to quantify telomerase reverse transcriptase and caspase-8 m-RNA expression level. Results As compared to the control group, mTERT mRNA expression level was significantly increased in group II. The gene in groups (III, IV, and V) was insignificantly higher than the control group but it was significantly decreased as compared to group II. The caspase-8 mRNA expression level was significantly decreased in all groups as compared to the control group. As compared to group II, caspase-8 mRNA level was significantly increased in group III. Conclusion The protective effect of cannabis extract is more pronounced in group taking cannabis before DMNA. Cannabinoids might exert their anti-tumor effects by the direct induction of apoptosis and can decrease telomerase activity by inhibiting the expression of the TERT gene. Coordination between inhibition of telomerase activity and induction of apoptosis might be a potential therapeutic agent for cancer treatment.

Characterization of Environmentally Friendly Polymers by Inverse Gas Chromatography: I Amylopectin

Abstract: Amylopectin, as a potato starch based polymer, with a molecular weight of six million gram/mol was characterized using the Inverse Gas Chromatography Method (IGC). DSC method was also used to measure the glass and melting temperatures. Both DSC and IGC agreed well on a Tg of 105°C and Tm of 160–166°C. Nineteen solutes (solvents) were injected onto a chromatographic column containing amylopectin. These solutes revealed the interaction of alkanes with AP, and the wettability and water intake of AP. Alkanes showed exothermic values of interaction parameters which were increased as the temperature increased and as the number of carbons in the alkane series decreased. Retention diagrams of these solutes in a temperature range of 80–200°C revealed two zones, crystalline and amorphous. Tg and Tm were measured using these zones which complimented the DSC values. The two zones were used to calculate the degree of crystallinity below the melting temperature which ranged from 85% at 104°C to 0% at 161°C. The dispersive component of the surface energy of amylopectin was measured using alkanes which ranged from 25.35 mJ/m2 at 80°C to 8.47 mJ/m2 at 200°C. This is attributed to the weak crystalline surface of AP at 80°C and when the surface melted at 160°C the surface energy decreased due to the thermal expansion of the surface.