Design of Serial-Fed Bend-Array and Measured Results

For the next generation mobile system (5G), a cylindrical lens antenna is developed for mobile base station application. As for the feed radiator for this lens antenna, bendarray configuration that produces a bifurcated beam is also developed. The bend-array configuration consisting of four rectangular patch array elements with serial feed network. In previous work, achievement of the bifurcated beam by bendarray configuration was shown by electromagnetic simulations. In this paper, a practical bend-array composed of four numbers of patch elements is fabricated. To verify the radiation characteristics, measured results of antenna input characteristic and radiation pattern are compared with the designed results. Through good agreement of measured and designed results, achievement of practical antenna is ensured

An experimental study of welded bar sleeve wall panel connection under tensile, shear, and flexural loads

This paper presents an experimental study of a new grouted splice connection for wall panels, called Welded Bar Sleeve (WBS). The connections were made from steel pipes and tested with incremental tensile, shear and flexural loads until failure. The aim is to determine the behaviour of the connection under the three load cases. For this, the connections are evaluated in terms of the load–displacement responses, ultimate capacities, ductility responses and some feasibility assessment criteria. WBS was found to provide sufficient strength at the bar embedded length of 8, 8 and 11 times the bar diameter under tensile, shear and flexural loads, respectively. It is effective under tension, but could only service up to 1/3 of its ultimate shear capacity. Flexural load is the most critical load case for the connection. For this, further enhancements are required when subjected to shear and flexural loads

PENERAPAN METODE PENEMUAN TERBIMBING UNTUK MENINGKATKAN PEMAHAMAN SISWA KELAS VII A SMP KATOLIK St. PAULUS PALU PADA MATERI PENJUMLAHAN DAN PENGURANGAN BILANGAN BULAT

Abstrak: Permasalahan utama pada penelitian ini adalah kurangnya pemahaman siswa kelas VII A SMP Katolik St. Paulus Palu pada materi penjumlahan dan pengurangan bilangan bulat. Hal ini disebabkan karena siswa kurang percaya diri dan kurang terlibat aktif dalam pembelajaran serta pola pikir siswa yang menganggap bahwa penjumlahan dan pengurangan bilangan bulat sama seperti penjumlahan dan pengurangan bilangan cacah. Untuk meningkatkan pemahaman siswa pada materi penjumlahan dan pengurangan bilangan bulat, maka peneliti menerapkan metode penemuan terbimbing berbantuan media kartu posinega yang ditempuh melalui beberapa langkah, yaitu (1) perumusan masalah, (2) pemprosesan data dan penyusunan konjektur, (3) pemeriksaan dan verbalisasi konjektur, dan (4) umpan balik. Rumusan masalah pada penelitian ini adalah bagaimana penerapan metode penemuan terbimbing untuk meningkatkan pemahaman siswa kelas VII A SMP Katolik St. Paulus Palu pada materi penjumlahan dan pengurangan bilangan bulat? Untuk menjawab permasalahan tersebut, maka peneliti melakukan penelitian tindakan kelas dengan menggunakan pendekatan kualitatif. Rancangan penelitian ini mengacu pada model Kemmis dan MC.Taggart yang terdiri dari empat komponen, yaitu (1) Perencanaan, (2) Pelaksanaan tindakan, (3) Observasi, dan (4) Refleksi. Data yang dikumpulkan pada penelitian ini melalui lembar observasi, wawancara, catatan lapangan dan data hasil belajar siswa.Data yang diperoleh disajikan dalam bentuk paparan naratif. Hasil penelitian menunjukkan bahwa melalui penerapan metode penemuan terbimbing berbantuan media kartu posinega, pemahaman siswa dapat meningkat sesuai dengan indikator keberhasilan tindakan.Kata Kunci: Metode Penemuan Terbimbing, Pemahaman, Penjumlahan dan Pengurangan Bilangan Bulat, Kartu Posinega

Left atrial and left atrial appendage functional recovery after cardioversion in patients with recent atrial fibrillation: Serial echocardiographic study

Background: The aim of this study is to point out timing of left atrium and its appendage functional recovery after cardioversion (CV) in recent onset atrial fibrillation (AF). Methods: Fifty patients; 27 within 48-h (group I) and 23 after 48-h (group II), of AF onset, who had successful CV underwent transthoracic echocardiography (TTE), before and im­mediately after CV, then 15, 30 and 90 days later. Transesophageal echocardiography (TEE) was performed for group II before and for all patients immediately after CV and 1 month later. Mitral peak A velocity and left atrial (LA) reversal (Ar) velocity, tissue Doppler imaging (TDI) of septal mitral annular velocity (A1) and LA free wall velocity (A3) were recorded. Absence or peak A velocity < 50 cm/s was taken as a cut off value for atrial stunning. Intra-atrial conduction time (IACT) was measured. LA appendage late emptying (LAALE) velocity was measured by TEE-pulsed TDI of LA appendage. Results: Post CV, all group II and 34% of group I experienced stunning. In both groups, peak A, Ar, A1, A3 and LAALE velocities increased (p = 0.000), while IACT decreased (p = 0.000) progressively over time. Partial recovery occurred after 15 and 30 days, while full recovery occurred 30 and 90 days post CV in groups I and II, respectively. IACT1 and IACT2 correlated with LA diameter (r = 0.2778 and r = 0.227, respectively, p < 0.01). Conclusions: Stunning and functional recovery of the LA and its appendage are strongly determined by the duration being in AF. Serial IACT by TDI was a good new parameter for detection of functional recovery of LA and LA appendage

CD19 Deficient B Cell Abnormality and Selective IgM Deficiency in a Malay Child. A Case Report.

Cases of CD 19 deficiency from South East Asia has rarely been reported. A, 1l yr Malay boy was referred with recurrent infections with 2 episodes of'chickenpox at age 2 years. He had repeated episodes of pneumoniae and bronchiectasis by age 6 years. Physical examination revealed gross clubbing with crepitations at both lung bases. IV lg administration was instituted with clinical improvementlaboratory data: Serum Ig (g/l )IgG 8.37[n 4.95- 16.56 ], IgA 0.92[n 0.30-2.35 7, lgM 0.21 [0.32-1.4}]Lymphocyte subset (age 1l) CD19 Q o , CD20 11.26% (12-22)CD3 83.64% (n 66-76) ,CD4 36.25 ( 33-41),CD8 41.55 (27- 35), CDl6+56 I1.6 %. (9-16),Specific antibody response to polysaccharide antigen was impaired ; whileNBT , lymphocyte proliferation to (PHA ) were normal, Btk protein 18% (control 87.8 %). Our finding conforms with a diagnosis of CD19 deficiency with selective IgM deficiency and partial defective Btk protein expression

Botanicals to Control Soft Rot Bacteria of Potato

Extracts from eleven different plant species such as jute (Corchorus capsularis L.), cheerota (Swertia chiraita Ham.), chatim (Alstonia scholaris L.), mander (Erythrina variegata), bael (Aegle marmelos L.), marigold (Tagetes erecta), onion (Allium cepa), garlic (Allium sativum L.), neem (Azadiracta indica), lime (Citrus aurantifolia), and turmeric (Curcuma longa L.) were tested for antibacterial activity against potato soft rot bacteria, E. carotovora subsp. carotovora (Ecc) P-138, under in vitro and storage conditions. Previously, Ecc P-138 was identified as the most aggressive soft rot bacterium in Bangladeshi potatoes. Of the 11 different plant extracts, only extracts from dried jute leaves and cheerota significantly inhibited growth of Ecc P-138 in vitro. Finally, both plant extracts were tested to control the soft rot disease of potato tuber under storage conditions. In a 22-week storage condition, the treated potatoes were significantly more protected against the soft rot infection than those of untreated samples in terms of infection rate and weight loss. The jute leaf extracts showed more pronounced inhibitory effects on Ecc-138 growth both in in vitro and storage experiments

Biobutanol production by Clostridium acetobutylicum NCIMB 13357 in modified medium using date fruit as a carbon source

Abstract: Biofuel is an alternative energy that is conceived being the future energy source; it can be produced from natural and renewable agricultural raw materials by microbes. Clostridium acetobutylicum has the ability to ferment variety of compounds to produce solvents such as: Acetone, Butanol, and Ethanol (ABE). This study was designed to investigate the ability of C. acetobutylicum to produce biobutanol or any other possible solvents using date fruit as the organic carbon source under anaerobic condition. The fermentation process was carried out under the following conditions: initial pH 6 and 7, incubation temperatures 30 o C and 35 o C for 70 hours. The effect of date fruit concentrations on C. acetobutylicum was studied 10 -50 g/L. Results showed that 40 g/ L of date fruit under initial pH 7 at 35 o C were the optimum conditions for fermentation process to produce 5.31 g/ L and 8.42 g/ L as biobutanol and total solvents respectively. The yield and productivity of ABE was 0.52 and 0.12 g/(L.h), respectively

Characterization of Lens Antenna in Wireless Communication System

The focus of this paper is to design lens and analyze the lens behavior in lens antenna. This lens antenna is designed to enhance the gain of conventional antenna. A few factors that influenced the design of lens and gain of lens antenna is investigated. CST software is used to design the lens. At the end of this experiment, the lens gain increased from 8.782 dB to 11.07 dB

The pattern of branching and intercommunications of the musculocutaneous nerve for surgical issues: anatomical study

Background: The aim of the present work was to provide evidence about the anatomical variations as regard the origin, distribution, and branching pattern of the musculocutaneous nerve (MCN). Materials and methods: Brachial plexus was dissected in 40 upper limbs of 20 male adult cadavers. The pattern of the musculocutaneous nerve was photographed by a digital camera. Results: The location and length of the nerve branches between left and right arms were recorded and statistically analyzed. In (90%) of specimens the MCN originates from the lateral cord of the brachial plexus, in (5%) it arose from the median nerve (MN), while in the remaining (5%) specimen, it was absent. The musculocutaneous nerve pierced the coracobrachialis muscle in 90% of specimens, and in the remaining (10%) did not pierce it. The motor branches to biceps brachii muscle were categorized into: Type 1 (90%): one branch that divides to supply the two heads of biceps; Type 2 (5%): double branches, innervating each head of biceps separately. The motor branches to brachialis muscle were categorized into: Type 1 (82.9%): one branch; Type 2 (14.2%): double branches and Type 3 (2.9%): three branches that innervating brachialis muscle. Communications between the MCN and the MN were observed in 35% of specimens. Conclusions: The knowledge of the common and uncommon musculocutaneous nerve variations is important especially to the surgeons for carrying out surgical procedures in axilla and arm

Targeting double genes in multiplex PCR for discriminating bovine, buffalo and porcine materials in food chain

Beef, buffalo and pork are the major meat of economic, religious and health concern. Current methods to authenticate these materials in food chain are based on mainly single gene targets which are susceptible to break down by food processing treatments. We, for the first time, described here a double gene targeting short-amplicon length multiplex polymerase chain reaction assay for discriminating bovine, buffalo and porcine materials in a single assay platform. The advantage of the assay is evidenced in terms of fidelity, cost and time since it is highly unlikely that two different targets would be missing even in a decomposed specimen. Detection of multiple targets in a single assay definitely saves analytical cost and time. Mitochondrial cytochrome b (cytb) and ND5 genes were targeted and six different targets (length: 90–146 bp), two for each of cow (120 and 106bp), buffalo (90 and 138bp) and pig (73 and 146bp), were amplified from raw, boiled, autoclaved and microwaved cooked meat under pure and mixed matrices. The detection limit was 0.02 ng DNA under pure states and 0.1% meat in binary mixtures and meatball products. Screening of Malaysian meatball products revealed all beef products were buffalo positive in which 35% were totally replaced. In contrast, all pork products were found uncontaminated from beef and buffalo