Switchable filtering in vivaldi antenna

Presented is a new frequency switchable Vivaldi antenna that has a capability to operate in a wideband mode (1-3 GHz) and reconfigure to six different subbands of operations. The reconfiguration is realised by coupling and changing the effective electrical length of ring slots inserted in the structure by means of pin diode switches. To examine antenna performances, simulated and measured results are presented. Good impedance matches and radiation patterns have been achieved. The proposed antenna is suitable for wideband and multimode radio applications

Purification and properties of a new dehalogenase enzyme from Pseudomonas sp. B6P grow in 3- chloropropionate (3CP)

Halogenated compounds are widely used in agriculture and industries and have been associated with environmental pollution. Degradation of 3-chloropropionate (3CP) by microorganism has been established and this enzyme could only remove halogen atom at the â- position of 3-carbon alkanoic acids. Pseudomonas sp. B6P was originally isolated from paddy field which was able to degrade 3CP therefore, suggesting it may have some desirable properties. The enzyme was purified from cell-free extracts having a monomer of 56,000 Da. It was found to be stable between pH 5 to 8 and its optimal pH was 8. Its activity was not affected by metal ions such as Mn2+, Fe3+ and Mg2+, but was inhibited by Hg2+ and Ag2+. The enzyme is specific for 3CP, and the Km value (0.20 mM ± 0.05).Key words: Biodegradation, 3-chloropropionic acid, dehalogenase,  bioremediation, haloalkanoic acid, Pseudomonas sp.B6P

IMPLEMENTASI MEDIA PEMBELAJARAN POWER POINT PADA KONSEP REDUKSI-OKSIDASI TERHADAP PENINGKATAN HASIL BELAJAR SISWA KELAS X SMA NEGERI 6 AMBON

Telah dilakukan penelitian pembelajaran pada konsep reduksi-oksidasi yang bertujuan untuk mengetahui peningkatan hasil belajar siswa melalui penerapan media pembelajaran power point  kelas X SMA Negeri 6 Ambon. Subjek dalam penelitian ini adalah siswa kelas X MIA1 SMA Negeri 6 Ambon semester genap Tahun Pelajaran 2018-2019. Pengumpulan data menggunakan teknik tes dan observasi belajar siswa. Dari hasil analisa data diperoleh bahwa hasil belajar siswa kelas X MIA1 telah mencapai kriteria ketuntasan minimal yaitu pada aspek kognif, afektif, psikomotor dengan nilai akhir yang diperoleh adalah kualifikasi sangat baik 3 siswa (14,09%), kualifikasi baik 14 siswa (66,66%), dan kualifikasi cukup 4 siswa (19,05%). Data pencapaian N-gain yang diperoleh yaitu 17 siswa (80,95%) mencapai kategori gain tinggi dan 4 siswa (19,05%) mencapai gain sedang. Hasil respon siswa terhadap pembelajaran menggunakan power point diperoleh presentase rata-rata sebesar 76,69% dengan kategori sangat baik. Oleh karena itu, dapat disimpulkan bahwa penerapan media pembelajaran power point memberikan hasil dan respon yang baik untuk hasil belajar siswa pada konsep reduksi-oksidasi dengan kriteria pencapaian n-gain yang diperoleh adalah 0,77

PENGGUNAAN MEDIA ISPRING dan POWER POINT PADA SUB KONSEP HUKUM - HUKUM DASAR KIMIA UNTUK MENINGKATKAN HASIL BELAJAR SISWA KELAS X SMA NEGERI 7 AMBON

This study aims to determine the learning outcomes of students in X grade of SMA Negeri 7 Ambon, after using Ispring media and power points in learning process. The population of this research is all students of  X grade, and the sample is X1 class consist of 17 students. Student learning outcomes data on sub concepts of chemical basic laws obtained through final tests, student worksheets (LKPD), affective assessment sheets, and psychomotor assessment sheets with the presentation of the results obtained by 1 student (5.88%) getting qualified very good, 5 students (35,29%) get good qualifications, 7 students (35,29%) get enough qualifications and 4 students (23.52%) with less qualifications. Learning outcomes show all students (100%) successfully reach the minimum completeness criteria (KKM) of 7

PRODUCTIVITY IMPROVEMENT OF ONION (ALLIUM CEPA L.) UNDER AGRO- CLIMATIC CONDITIONS OF MANSEHRA, PAKISTAN

The present study was conducted to investigate the effect of various levels of NPK fertilizers on the yield  and yield contributing factors of onion.Treatments includes namely T1(00-00-00),T2(25-25-12.5),T3(50-50-25),T4(75-75-37.5)and T5(100-100-50) NPK kg/ha. All P and K fertilizer was applied as basal dose while Nitrogen was applied in split doses.  The variety used in the study was Swat-1. Data revealed that at harvest maximum plant height of 53.8cm, No. of leaves/plant (7), No. of roots/plant (95), No. of bulb/plot ( 221), fresh weight/bulb (127.7g), bulb size (6.4 cm),  and yield of 24.92 tons/ha were recorded in treatment T5 provided 100-100-50 NPK kg/ha followed by plant height of 52.2cm, No. of leaves/plant (6), No. of roots/plant (83),  No. of bulb/plot(156) , fresh weight/bulb 118g , bulb size 5.7cm,  and 23.87 tons/ha yield   in treatment receiving 75-57-37.5NPK kg/ha. The minimum plant height of 46.3 cm, No. of leaves/plant (5), No. of roots/plant (55), No. of bulb/plot (114), fresh weight/ bulb (103.5 g) bulb size (5.05cm) and yield of 17.80 tons/ha was recorded in control plot  (without NPK). Results indicates that NPK @100-100-50 kg/ha proved to be the optimal dose of fertilizer to get maximum yield of onion

Relative Expression of CMyc MRNA in Human Glioma Cells and Its Relationship with the Degree of Malignancy

Relative Expression of cMyc85Vol. 5, No. 2, Agustus 2017RESEARCH ARTICLERelative Expression of cMyc mRNA in Human Glioma Cells and its Relationship with the Degree of Malignancy Fidinny I. Hamid,1 Novi S. Hardiany,2* Febrial Hikmah,3 Syaiful Ichwan41Undergraduate Program FM Universitas Indonesia2Department of Biochemistry and Molecular Biology, FM Universitas Indonesia3Biomedical Sciences Program FM Universitas Indonesia4Department of Neurosurgery FM Universitas Indonesia -Dr Cipto Mangunkusumo General Hospital*Corresponding author: [email protected] 10 April 2016; Accepted 23 Agustus 2017DOI: 10.23886/ejki.5.7467AbstractPluripotency of cMyc genes may be one factor for the high glial cell differentiation in glioma thus it can become an alternative therapeutic target. The objective of the study is toanalyze the cMyc mRNA expression and its relationship with the degrees of glioma Malignancy. This is a cross-sectional study from 20 glioma samples with different degree of Malignancy from Dr. Cipto Mangunkusumo General Hospital, Jakarta during the period of October 2014 until February 2015. The mRNA obtained from glioma samples are converted to cDNA and then amplified. Relative quantification of cMyc mRNA expression is measured by calculating the cycle threshold values of Real Time RT PCR and normalized towards 18s rRNA to predict the relationship between the expression of cMyc and the degree of Malignancy. The cMyc expression is increased in accordance with the tumor grade. The cMyc expressions in high grade glioma are 17424.23 folds higher when calibrated to the normal cell, whereas the genes in lower grade tumors are expressed with the rate of 6167.35. Although the values obtained are not statistically significant, this research has strengthened molecular diagnosis, specifically pluripotency as the factor that gives a greater prognostic relevance than the histopathologic diagnosis. As a conclusion, there is a clinical tendency where the relative mRNA expression was higher in in glioma cMyc high degrees compared with low-grade glioma, however it is not statistically significant

Female genital tuberculosis revisted

Objective: To assess the clinical presentation of genital tuberculosis and to study various modes of diagnosis and treatment.SETTING: The Aga Khan University Hospital (AKUH), Karachi.Method: A retrospective case review of all index female cases of genital tuberculosis, admitted to AKUH over twelve years of period.Result: A total of 40 cases of genital tuberculosis were reported during this time period. Majority of cases were between 25-45 years. The commonest presenting symptoms were infertility (42.5%) and abdominal pain (42%). Others included fever, ascites, irregular vaginal bleeding, oligomenorrhea, chest pain and pain in the flanks. Main mode of treatment was antituberculous drug therapy for duration of nine months. Only 3 patients had successful pregnancies.Conclusion: Genital tuberculosis should be excluded when managing infertility in females

Maternal deaths in a developing country: A study from the Aga Khan University Hospital, Karachi, Pakistan 1988-1999

Objective: The maternal deaths occurring over a twelve-year period (1988-1999) in a tertiary referral center were reviewed. The purpose of the study was to assess the causes of these maternal deaths.Setting: The Aga Khan University Hospital (AKUH) Karachi, Pakistan.Methods: The medical records of maternal deaths were reviewed. These were women who had either registered for delivery at the hospital; or were referred from another hospital or from home, when an emergency developed. They were either admitted to the Medicine, Surgery and the Obstetrics and Gynaecology Departments at the hospital.Results: A total of 81 maternal deaths were identified, of which five were the registered patients. Causes of deaths were eclampsia, puerperal sepsis and pulmonary embolism. The maternal mortality ratio in the registered patients was 20 per 100,000 live births. Ninety percent of the women were between the age group of 15-35 years. Of these forty two percent were primigravidas, forty four percent of the women died due to direct causes, of which sepsis was the most common cause and accounted for twenty five percent of the total deaths. Indirect causes were responsible for 55.6% of the deaths, including hepatic failure in 21%, other infectious disease in 17% and malignancy in 5% of the cases.Conclusion: In developing countries other than obstetrical causes, infectious diseases contribute to the death of women during childbearing years. Comprehensive medical services and adequate obstetrical emergency services can lower maternal mortality rates at all levels

Development of Composite Adsorbent Coating Based Acrylic Polymer/Bentonite for Methylene Blue Removal

The development of composite adsorbent coating based acrylic polymer solution (APS) mixed with bentonite (ben) was investigated. The composite adsorbent coating was prepared and coated to a high surface area substrate, cotton cellulosic fiber (CCF). The APS/ben-CCF was used for a single cationic methylene blue (MB) dye adsorption system. Characterization of composition and structure of materials and coating was carried out by X-ray fluorescence (XRF), scanning electron microscopy (SEM), and UV-spectroscopy (UV-VIS). The adsorption properties of the APS/ben-CCF were investigated as a function of solution pH, initial dye concentration and contact time as well as solution temperature of MB dye. The result revealed that the APS/ben-CCF functioned well in solutions of various pH (acidic to alkaline), achieving 100% removal of MB within 2 hours of adsorption for 50 ppm. Kinetic studies showed that APS/ben-CCF is endothermic in nature since the adsorption capacity increased with increasing solution temperature. These results demonstrate that APS/ben-CCF composite adsorbent coating is an advanced adsorbent with advantages such as easy phase separation and capability to remove cationic dyes in a short time period

Correlated quantum percolation in the lowest Landau level

Our understanding of localization in the integer quantum Hall effect is informed by a combination of semi-classical models and percolation theory. Motivated by the effect of correlations on classical percolation we study numerically electron localization in the lowest Landau level in the presence of a power-law correlated disorder potential. Careful comparisons between classical and quantum dynamics suggest that the extended Harris criterion is applicable in the quantum case. This leads to a prediction of new localization quantum critical points in integer quantum Hall systems with power-law correlated disorder potentials. We demonstrate the stability of these critical points to addition of competing short-range disorder potentials, and discuss possible experimental realizations.Comment: 15 pages, 12 figure