Oxidation of total organic content in lake water samples: a case study

The oxidn. of total org. content (TOC) present in the two selected Bangalore city lake (Medahalli and Ulsoor lakes) water samples at two different seasons of the year 2010 using photocatalyst TiO2 as been studied. The different forms of TiO2 such as anatase, rutile and mixed form (Degussa P25) are used for the study. The mixed form (mixt. of anatase and rutile) has given better results in photooxidn. than the individual TiO2 forms. The oxidn. of these pollutants present in the wastewater will be oxidized by photo​/ photocatalysis and the extent of contamination and oxidn. are measured by COD and BOD tests. The photooxidn. studies were made under natural sun light illumination. The efficiency and the rate consts. for the oxidn. of TOC are calcd. and presented. The TOC oxidn. reactions are found to follow first order kinetics. The rate consts. for photocatalytic oxidn. of TOC of the Medahalli lake samples of June and Dec. months are 0.333 and 0.49 (× 10-​4 s-​1) and for Ulsoor lake samples are 0.52 and 0.666 (× 10-​4 s-​1) resp

Race/ethnicity and the risk of childhood leukaemia: a case-control study in California.

BackgroundWe conducted a large registry-based study in California to investigate the association between race/ethnicity and childhood leukaemia focusing on two subtypes: acute lymphoblastic leukaemia (ALL) and acute myeloid leukaemia (AML).MethodsWe obtained information on 5788 cases and 5788 controls by linking California cancer and birth registries. We evaluated relative risk of childhood leukaemia by race and ethnicity of the child and their parents using conditional logistic regression, with adjustment for potential confounders.ResultsCompared with Whites, Black children had lower risk of ALL (OR=0.54, 95% CI 0.45 to 0.66) as well as children of Black/Asian parents (OR=0.31, 95% CI 0.10 to 0.94). Asian race was associated with increased risk of AML with OR=1.643, 95% CI 1.10 to 2.46 for Asian vs Whites; and OR=1.67, 95% CI 1.04 to 2.70 for Asian/Asian vs White/White. Hispanic ethnicity was associated with increased risk of ALL (OR=1.37, 95% CI 1.22 to 1.52). A gradient in risk of ALL was observed while comparing Hispanic children with both parents Hispanic, one parent Hispanic and non-Hispanic children (p Value for trend <0.0001). The highest risk of ALL was observed for children with a combination of Hispanic ethnicity and White race compared with non-Hispanic whites (OR=1.27, 95% CI 1.12 to 1.44). The lowest risk was observed for non-Hispanic blacks (OR=0.46, 95% CI 0.36 to 0.60). Associations for total childhood leukaemia were similar to ALL.ConclusionsOur results confirm that there are ethnic and racial differences in the incidence of childhood leukaemia. These differences indicate that some genetic and/or environmental/cultural factors are involved in aetiology of childhood leukaemia

Abnormal uterine bleeding in a woman with caesarean scar defect (isthmocele): a case report

The caesarean scar defect generally is described as a triangular or circular sonographically anechoic area in the myometrium of the anterior lower uterine segment or cervix at the site of a previous caesarean section. Caesarean section is one of the most commonly performed surgeries and the trend is increasing in the recent years. One long-term complication of caesarean delivery which is not often discussed is the presence of a defect within the uterine scar that is directly associated with a type of abnormal uterine bleeding (AUB) referred to as postmenstrual bleeding. In addition to AUB, presented as pelvic pain, dyspareunia, dysmenorrhea, unexplained infertility. Caesarean scar defect is one such cause of AUB which is overlooked as the history of caesarean section will be many years ago. One such case of woman presenting with abnormal uterine bleeding and pain in abdomen with caesarean defect who was managed in our tertiary care centre reported here

Description of nuclear octupole and quadrupole deformation close to the axial symmetry: Octupole vibrations in the X(5) nuclei 150Nd and 152Sm

The model, introduced in a previous paper, for the description of the octupole and quadrupole degrees of freedom in conditions close to the axial symmetry, is used to describe the negative-parity band based on the first octupole vibrational state in nuclei close to the critical point of the U(5) to SU(3) phase transition. The situation of 150Nd and 152Sm is discussed in detail. The positive parity levels of these nuclei, and also the in-band E2 transitions, are reasonably accounted for by the X(5) model. With simple assumptions on the nature of the octupole vibrations, it is possible to describe, with comparable accuracy, also the negative parity sector, without changing the description of the positive-parity part.Comment: 8 pages, 5 figure

Penyaradan Kayu Sesuai Standar Prosedur Operasional Untuk Meningkatkan Produktivitas Dan Meminimalkan Biaya Produksi Dan Penggeseran Lapisan Tanah Atas : Kasus Di Satu Perusahaan Hutan Di Jambi

Penggunaan alat berat pada penyaradan dapat menimbulkan kerusakan tanah berupa penggeseran lapisan tanah atas atau hilangnya top soil. Kehilangan top soil berarti mengurangi kesuburan tanah hutan yang pada akhirnya dapat menurunkan produktivitas hutan. Teknik penyaradan yang efisien dan efektif dapat meningkatkan produktivitas dan menurunkan biaya sarad serta penggeseran lapisan tanah atas. Penelitian dilaksanakan di PT Wirakarya Sakti di Jambi pada bulan Mei tahun 2010. Tujuan penelitian ini adalah untuk mengetahui pengaruh penerapan teknik penyaradan sesuai prosedur (TSP) dan teknik setempat (TS) terhadap produktivitas, biaya sarad dan penggeseran lapisan tanah atas. Tahapan penelitian dilakukan dengan pengambilan data lapangan dan wawancara yang kemudian dianalisis secara tabulasi. Untuk merekomendasikan teknik sarad yang digunakan, kedua teknik dianalisis dengan uji-t. Hasil penelitian menunjukkan: 1. Rata-rata produktivitas sarad TSP (38,941 m3.hm/jam) lebih tinggi daripada TS (33,779 m3.hm/jam); 2. Rata-rata biaya produksi sarad TSP (Rp 9.076,3 m3.hm) lebih rendah daripada TS ( Rp 10.395,5 m3.hm.); dan 3. Penerapan TSP dengan menggunakan jalur matting dapat memperkecil kedalamanan penggeseran lapisan tanah atas yaitu dari 8,9 mm (2,67%) menjadi 1,4 mm (0,42%);

Maya Index Analysis of Dengue Fever Vector in East Metro Sub-District Lampung Province Indonesia

Dengue fever was one of the dangerous diseases due to it might cause death in a short time. It transmitted through its vectors, namely, Aedes aegypti and Aedes albopictus. Maya index is an indicator that used to identify a high-risk area or not as a breeding ground for Aedes sp. The purpose of this study was to determine the type of landfill which has the potential as a breeding ground for mosquitoes, to find out the larvae found in various landfill sites, and to know the Maya index status in Metro Timur Subdistrict which was carried out in November-December 2017. This research conducted by a direct survey of 100 residents\u27 houses in East Metro. The results indicated that the type of controlled water reservoir that had the most potential as a breeding place for mosquitoes was a bathtub, while the type of water reservoir that was not controlled which had the potential as a place for mosquito breeding was a fish pond usage. There were 2 types of larvae found, namely, Aedes aegypti larvae with a percentage of 47.7% and Aedes albopictus larvae with a percentage of 52.3%. The Maya index status detected there, was a medium category, which obtained from the BRI combination and HRI category. Besides, it did not mean that the area has been free from dengue cases. The role of the community is still very much needed in eradicating landfills which has the potential as a breeding place for dengue mosquitoes vector