Geographical Assessment of the Natural Environment at Al-Huwaizah Marsh, Eastern Of Misan Governorate (Iraq)

In this article, Al-Huwaizah Marsh, one of the biggest wetlands in southern Iraq, has been studied. The spatial analysis approach was used to study the spatial relationships between the elements of the natural environment on the one hand, and their relationship to the distribution of organisms in Al-Huwaizah Marsh on the other hand. A geographic information system (GIS) was established and fed with the data contained in the topographical, geological, pedological, and hydrological maps issued by the various Iraqi institutions. The study hypothesis indicated that the abiotic elements of the ecosystem (location, surface, geological structure, climate, and soil) played a direct role in the geographical distribution of biotic elements (animals and plants) of Al-Huwaizah Marsh. Al-Huwaizah Marsh is a natural depression that collects water during floods and is distinguished by providing an ideal environment for different species of birds, fish, mammals, and plants to live. The four most significant waterbodies of Al-Huwaizah Marsh are Al-Edhaim, Umm Al-Na'aj, Al-Sanaf, and AlJakka

Alfa-Lipoic Acid Controls Tumor Growth and Modulates Hepatic Redox State in Ehrlich-Ascites-Carcinoma-Bearing Mice

The effect of oral supplementation of α-lipoic (LA) on growth of Ehrlich ascites carcinoma cells (EACs) and hepatic antioxidant state in mice was investigated. The results revealed that α-lipoic (LA) acid at 50 mg/kg body wt reduced the viability and volume of EAC cells and increased the survival of the treated animals. In addition, LA normalized oxidative stress in liver of mice-bearing EAC cells evidenced by increasing the levels of total thiols, glutathione, glutathione-S-transferase, superoxide dismutase, and catalyse. On the other hand, significant decreases in the levels of malondialdehyde and protein carbonyl were demonstrated in liver indicating controlled oxidative stress in these animals. As a consequence, LA regulated liver enzymes, alkaline phosphatase, aspartate aminotransferase, alanine aminotransferase, and gamma-glutamyl transferase. The data also indicated the efficiency of LA as cancer inhibitor and therapeutic influence. In conclusion, the present data suggest LA as a potential therapeutic complement in the treatment or prevention of different pathologies that may be related to an imbalance of the cellular oxidoreductive status associated with malignancy

Human resources development in an era of educational reform An empirical investigation of policy and practice

SIGLEAvailable from British Library Document Supply Centre- DSC:DXN058025 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Forward Modeling Metode Gravity

<p>Sumber energi sangat penting dalam pengembangan teknologi saat ini. Energi sendiri merupakan bahan bakar penggerak mesin. Jika ingin memanfaatkannya, maka harus didapatkan sumber yang baik dan sesuai dengan kriteria pasar. Dalam pencarian energi diperlukan proses eksplorasi, yaitu proses peninjauan lebih lanjut tentang tempat-tempat yang berpotensi mengandung sumber bahan bakar bumi. Beberapa metode yang biasa digunakan mencari sumber energi, yaitu metode seismik, metode gravitasi, metode gelombang elektromagnetik, dan sebagainya. Pada tulisan ini akan dibahas mengenai metode gravitasi. Metode gravitasi didasarkan pada hukum Newton. Metode forward modeling metode gravitasi pada proyek ini dilakukan dengan membuat model matematis berupa bujursangkar untuk menggambarkan intrusi, dan dua garis tak sejajar yang terpisah di satu titik untuk menggambarkan patahan. Dari pemisalan ini, nilai perbedaan gravitasi dihitung dengan menggunakan perangkat lunak Matlab dan hasil penghitungan di tiap titik model ditampilkan dalam bentuk grafik. Hasil pemrograman menunjukkan bahwa pada daerah model, akan muncul anomali pada grafik. Kesimpulannya, setiap model geometri yang berbeda akan memiliki rumus pemodelan yang berbeda.</p

The Origin and MgCl2–NaCl Variations in an Athalassic Sag Pond: Insights from Chemical and Isotopic Data

The examination of past and new chemical–isotopic data (2H/1H–18O/16O,11B/10B and87Sr/86Sr ratios) shows the meteoric origin of the Sawa Lake (Muthanna Governorate, Iraq) and its connection with the local aquifers, which feed the lake via the groundwater emerging from its floor through fault systems. The chemical and isotopic evaporation models are traced by geochemical computer codes by using a different composition of some potential inflows to the lake (e.g., the Euphrates River and Dammam aquifer). The main product of the chemical evaporation models is gypsum, as confirmed by the mineralogical examination of the sediment and the surrounding outcrops. A strong18O–2H enrichment is a consequence of the evaporation effect in arid regions; δ18O–Cl models and δ11B = + 23.4‰ exclude the contribution of any seawater-derived fluids. This latter value along with87Sr/86Sr = 0.707989 suggests a mixed origin from the Eocene–Miocene aquifers. The isotope and chemical evaporation paths from the meteorically recharged sources match the lake composition. However, compositional switches from NaCl toward MgCl2occurred in the last decade and are related to post-drought periods, showing that the interaction of the recharging waters with the local soils (Na–Mg exchange and/or the leaching of the top layer salts) have a role in the chemical composition. This demonstrates that the lake is significantly influenced by climatic variations