Analisis Kualitas Air yang Tercemar Merkuri (Hg) di Perairan Teluk Kao Halmahera Utara

Penelitian ini menganalisis dan menentukan tingkat pencemaran merkuri (Hg) di perairan Teluk Kao Halmahera Utara. Metode yang digunakan adalah metode survei observasi wawancara dan pengambilan sampel air dengan cara purposive sampiling sedangkan untuk analisis air dan sedimen mengunakan alat spektrofotometer penyerap atom (atomic absorption spectrophotometer, AAS). Analisis kualitas air sungai, air laut di perairan Teluk Kao Halmahera Utara untuk pagi dan sore dengan nilai sebesar 0,004 mg/L - 0,0038 mg/L. Sedangkan kandungan merkuri (Hg) untuk sedimen pagi dan sore dengan nilai 0,0032, mg/L - 0,0076 mg/L. Berdasarkan dari hasil tersebut bahwah mutu air sungai Kobok dan Taolas di perairan Teluk Kao Halmahera Utara sudah tidak bisa dikonsumsi sesuai Peraturan Pemerintah Pengelolaan air minum secara konvensional (kelas 1), 0,001 ppm, (kelas 2 dan 3), 0,002 ppm dan (kelas 4). 0,005 ppm dengan demikian mutu air sungai Teluk Kao sudah tidak aman untuk di konsumsi bagi masyarakat Teluk Kao. Sedangkan untuk sedimen sungai Kobok dan Taolas Teluk Kao sudah tidak lagi memenuhi Standar Bahan Baku Mutu sesuai Peraturan Pemerintah No. 82 Tahun 200 kelas I. 0,001 mg/L kelas II. 0,002 mg/L kelas III. 0,002 mg/L kelas IV 0,005 mg/L

Using network analysis for the prediction of treatment dropout in patients with mood and anxiety disorders: a methodological proof-of-concept study

There are large health, societal, and economic costs associated with attrition from psychological services. The recently emerged, innovative statistical tool of complex network analysis was used in the present proof-of-concept study to improve the prediction of attrition. Fifty-eight patients undergoing psychological treatment for mood or anxiety disorders were assessed using Ecological Momentary Assessments four times a day for two weeks before treatment (3,248 measurements). Multilevel vector autoregressive models were employed to compute dynamic symptom networks. Intake variables and network parameters (centrality measures) were used as predictors for dropout using machine-learning algorithms. Networks for patients differed significantly between completers and dropouts. Among intake variables, initial impairment and sex predicted dropout explaining 6% of the variance. The network analysis identified four additional predictors: Expected force of being excited, outstrength of experiencing social support, betweenness of feeling nervous, and instrength of being active. The final model with the two intake and four network variables explained 32% of variance in dropout and identified 47 out of 58 patients correctly. The findings indicate that patients’ dynamic network structures may improve the prediction of dropout. When implemented in routine care, such prediction models could identify patients at risk for attrition and inform personalized treatment recommendations.This work was supported by the German Research Foundation National Institute (DFG, Grant nos. LU 660/8-1 and LU 660/10-1 to W. Lutz). The funder of the study had no role in study design, data collection, data analysis, data interpretation, or writing of the manuscript. The corresponding author had access to all data in the study and had final responsibility for the decision to submit for publication. Dr. Hofmann receives financial support from the Alexander von Humboldt Foundation (as part of the Humboldt Prize), NIH/NCCIH (R01AT007257), NIH/NIMH (R01MH099021, U01MH108168), and the James S. McDonnell Foundation 21st Century Science Initiative in Understanding Human Cognition - Special Initiative. (LU 660/8-1 - German Research Foundation National Institute (DFG); LU 660/10-1 - German Research Foundation National Institute (DFG); Alexander von Humboldt Foundation; R01AT007257 - NIH/NCCIH; R01MH099021 - NIH/NIMH; U01MH108168 - NIH/NIMH; James S. McDonnell Foundation 21st Century Science Initiative in Understanding Human Cognition - Special Initiative)Accepted manuscrip

Pengaruh Penggunaan Multimedia Interaktif dalam Pembelajaran Matematika untuk Meningkatkan Hasil Belajar Siswa SD

Mata pelajaran matematika merupakan mata pelajaran yang perlu diberikan kepada peserta didik mulai dari sekolah dasar (SD), dengan tujuan untuk membekali peserta didik dengan kemampuan berfikir logis, analitis, sintetis, kritis dan kreatif, serta kemampuan bekerjasama. Beberapa hal yang diperoleh di lapangan berkaitan dengan pembelajaran matematika adalah anggapan siswa bahwa pembelajaran matematika itu membosankan, susah, dan sulit dipahami. Selain itu, dalam pembelajaran matematika kurangnya motivasi siswa dalam belajar. Hal ini akan berdampak pada kurangnya antusiasme sehingga siswa sulit memahami pelajaran. Oleh karena itu, perlu adanya sebuah inovasi dalam pembelajaran matematika. Media pembelajaran khususnya komputer sebagai salah satu sarana untuk menunjang proses pembelajaran dan meningkatkan hasil belajar dapat menjadi sebuah solusi allternatif dalam pembelajaran matematika di SD. Hasil penelitian menunjukkan bahwa pembelajaran matematika menggunakan multimedia interaktif berpengaruh secara signifikan terhadap peningkatan hasil belajar siswa. Selain itu, siswa juga mempunyai sikap yang positif terhadap pembelajaran matematika menggunakan multimedia interaktif. Pada pembelajaran menggunakan multimedia interaktif siswa merasa senang belajar matematika, dan termotivasi untuk belajar matematika. Oleh karena itu, penggunaan multimedia interaktif dapat dijadikan sebagai solusi alternatif dalam pembelajaran matematika di SD

Calcifying fibrous pseudotumor in association with hyaline vascular type castleman\u27s disease.

Calcifying fibrous pseudotumor is a recently described rare entity. It is considered as sclerosing end stage of inflammatory myofibroblastic tumor. An association with hyaline vascular type Castleman\u27s disease has also been described. We report a case of a 13-year-old boy who presented with pain in epigastrium. Computed tomography scan of abdomen revealed a circumscribed mass arising from the gastric wall along the greater curvature. Histology revealed a tumor composed of spindle cells present within the dense hyalinized collagenous tissue. Lymphoplasmacytic infiltrate was seen along with lymphoid follicles, dystrophic and ossifying calcification. Tumor cells were focally positive for alpha smooth muscle actin and negative for anaplastic lymphoma kinase protein

Finding the Optimized Frequency of Electric Field on the Attempt of Reducing Blood Sugar Level in Type II Diabetes Patients

A study has been conducted to test the use of electric fields to lower blood sugar levels on rats with type II Diabetes Mellitus. This study uses male rats (Rattus novergicus), aged 8–12 weeks weighing 150–200 grams, with a total of 31 rats. Therapy was conducted by putting rats in a chamber that emits an electric field every day for 1 hour for 28 days. To search for the optimum frequency of the treatment, frequency variations of 15, 30, 60, and 120 kHz were given. The electrical charge distribution of the air in the room was then measured, whereas mice blood sugar levels were also measured to reveal the effect of the treatment on cell tolerance to sugar, and to come up with the measurement of insulin levels at the end of the treatment. The results of measurements of the electrical charges in the air were very significant generally showing that the treatment with a frequency of 15 to 120 KHz for four weeks in the experimental animals could lower their blood sugar (fasting period), but the success rate significantly occurred at a frequency of 15 kHz. The decrease in fasting blood sugar levels after the treatment was probably due to the influence of the treatment (the influence of an electric field) that improved the regulation of insulin receptors. Improvements in the regulation of insulin receptor activities with high gluconeogenesis may be the cause of a decrease in fasting blood sugar levels that is not accompanied by improved cell tolerance to sugar.     Keywords: electric field, blood sugar levels, insulin level

Pembinaan Kompetensi Profesional Guru Oleh Kepala Sekolah Pada SMP Negeri 2 Kota Sigli

Coaching of teachers is one form of business to enhance the professional competence of teachers in achieving quality learning period on SMP Negeri 2 Sigli. This study aims to determine teacher training in: (1) the process of preparing the learning program are: curriculum, syllabus, lesson plans, annual program, the semester program, and details of the effective week. (2) fostering the implementation of learning, namely: the initial activity to open the lesson, explaining the materials, instructional media, learning methods, learning resources, and KKM. (3) fostering enhancement of professional competence of teachers are: supervision, refresher courses, seminars, and MGMP. The method used in this research is descriptive method with qualitative approach, this research sites in SMP Negeri 2 Sigli. Data collection techniques in the study carried out directly by the researcher through interviews, observation, and study documentation. The subject of this research is the principal, vice principal areas of the curriculum, and teacher SMP Negeri 2 Sigli. The results obtained are: (1) principals in the process of preparing teachers to foster learning programs such as the RPP, the annual program, the semester program, and details of the effective week. (2) fostering the principal teachers in the implementation of the learning done by describing the materials, instructional media, learning methods, learning resources. (3) school head teachers to foster improvement of professional competence by way of supervision, Panataran, seminars and enable MGMP as well as providing facilities and infrastructure