Perancangan dan Analisa Penggelaran Lte pada Frekuensi 700 Mhz dengan Metode Adaptif Modulation Coding untuk Implementasi Digital Dividend di Wilayah Sub-urban dan Rural Kabupaten Banyumas

Rencana Implementasi analouge switchover to TV digital akan menjadikan solusi dalam menyikapi terbatasnya alokasi spektrum radio untuk memenuhi pengembangan serta pemerataan mobile broadband di Indonesia. Pemanfaatan frekuensi 700 MHz untuk teknologi untuk teknologi LTE (Long Term Evolution) akan memberikan dampak yang positif terhadap bagi penyebaran layanan telekomunikasi terutama pada wilayah rural yang memiliki penetrasi broadband yang kecil, sehingga mampu mengurangi kesenjangan digital antara wilayah urban, sub-urban dan rural. Perancangan jaringan LTE FDD pada frekuensi 700 MHz band menggunkan skenario bandwidth 15 MHz dan 10 MHz di wilayah Sub-Urban dan Rural Kabupaten Banyumas yang dilakukan dengan menggunakan pendekatan coverage, kapasitas dan simulasi menggunakan software Atoll untuk menganalisa performa jaringan LTE. Pada pendekatan coverage dengan menggunakan model propagasi Okumura-Hatta membutuhkan 13 e_NodeB untuk dapat mencakup seluruh wilayah pengamatan. Sedangkan pendekatan kapasitas pada skenario bandwidth 10 MHz cembutuhkan 8 e_NodeB (MIMO 2x2) dan 4 e_NodeB (MIMO 3x3) dan pada skenario bandwith 15 MHz membutuhkan 4 e_NodeB baik menggunakan MIMO 2x2 maupun MIMO 3x3. Berdasarkan simulasi kualitas sinyal, didapatkan nilai rata-rata RSRP -72.2 dB dan SINR rata-rata 6.83. Sedangkan nilai index CQI sebesar 7.17, sehingga perangkat user yang dapat menerima layanan adalah yang memiliki spesifikasi modulasi 64QAM dengan code rate 466 dan efisiensi 2.7. Pada parameter nilai throughput memiliki perbedaaan antara kedua skenario, dimana bandwidth 15 MHz memiliki throughput hingga 52 Mbps sedangkan bandwidth 10 MHz hanya 16 Mbps

Determination of calf circumference cut-off values for Malaysian elderly and its predictive value in assessing risk of malnutrition

Introduction: Malnutrition is a growing problem but quite often under-recognised in elderly people. Calf circumference (CC) is a simple measurement that can be used to identify elderly people who are at high risk of malnutrition; however, a population-specific cut-off point must be developed. Therefore, this study aimed to determine suitable cut-off points and evaluate the predictive value of the CC cut-off point for elderly Malaysians. Methods: A total of 820 persons comprising 433 men and 387 women were recruited as subjects. The mean age was 69.0 ± 6.8 and ranged between 60 to 97 years. Data were collected from Sabak Bernam, Selangor Kuala Pilah, Negeri Sembilan; Pasir Mas, Kelantan, and Kodiang, Kedah. A linear regression analysis with the z-score procedure by gender was used to derive the CC prediction equations. Results: The CC cut-off points for men and women at risk of malnutrition were 30.1 cm and 27.3 cm, respectively. The final predictive CC equations for men was CC (cm) = 3.69 (z score) + 33.81, R2 = 1 and CC (cm) = 0.7103 (BMI) + 18.54, R2 = 1; and for women, CC (cm) = 4.31 (z score) + 31.63, R2 = 1 and CC (cm) = 0.6698(BMI) + 16.847, R2 = 1. Based on these equations, using the z-score equal to negative 1 for men (BMI 16.30 kg/m2) and women (BMI 15.64 kg/m2), the mean of the predictive value of the CC cut-off point was 32.0 ± 4.2 cm in men and 30.5 ± 4.6 cm in women. Conclusion: It is suggested that these cut-off points be used to screen elderly individuals who are at risk of malnutrition. Further studies should be undertaken to further verify the application of the findings of this study

Influenced factors in the delignification process of red meranti wood sawdust

Lignocellulosic biomass are plants that include forestry residue and agricultural residues that are mainly composed of cellulose, hemicelluloses and lignin. Red Meranti wood sawdust (RMWS) are one of lignocellulosic biomass that rich-cellulose content. To obtain cellulose, the pretreatments are needed to extract it from outer layer of lignin and hemicellulose by using the acid-chlorite delignification procedure aided with design of experimental from Design Expert 7.1 software. Four factors were selected in design of experiment using two level with half fraction factorial analysis were came out with total of 8 runs. The factors contributed were ratio acetic acid (AC) to RMWS (0.45 and 0.6), ratio sodium chlorite to RMWS (0.6 and 1.64), reaction time (4hr and 6hr) and temperature (55°C and 75°C). The results obtained were showed that the design model was substantial resulting with a coefficient of determination value of 0.9963. Two factors that generated the highest to the process were ratio SC to RMWS (B) and temperature (D). The percentage error between the actual and predicted value for lignin removal at 0.79% and 4.92%, which found to be less than 5%, and thus, the model was successfully validated

Community Empowerment Through Sulfur Soap Preparation for Dermatitis Prevention

Background: As a country with a tropical climate, Indonesia has the risk to have many disease problems, such as skin disorder or dermatitis. Dermatitis is an either acute, sub-acute, or chronic inflammatory skin disease. One of therapies is using sulfur compound. Purpose: The objective of this program was to improve public awareness of Tulungagung Regency on the importance of health care, to train people preparing soap containing sulfur, and to help the people to empower the economic community through home industry initiation. Methods: This program was done by motivation generating, counseling, advocacy, and education. The activities were performed through counseling about skin diseases, causes, the prevention and treatment of the disease with sulfur soap, demonstration and providing training to the community about sulfur soap. Results: The training on handmade soap preparation was conducted at the Village Hall of Mojosari, Kauman, Tulungagung, on July 28-29th 2019 and was attended by 20 female participants. The socialization programme was carried out by providing technical guidance, visual exposure of materials, packaging training through small groups. Conclusion: This training program of soap containing sulfur preparation attracted public attention to gain the science, knowledge, and skill increase business motivation, knowledge, and community skills as well as motivation generation to apply a simple technology of soap containing sulfur manufacturing

Rancang Bangun Tungku Biomassa Mesin Pengering Rumput Laut Kapasitas 600 Kilogram Per Proses [Design of Biomass Furnace for Seaweed Drying Machine with Capacity of 600 Kilograms Per Process]

  Pengeringan rumput laut di Indonesia, khususnya di desa Lontar Kabupaten Serang masih menggunakan cara manual dan tradisional. Pengeringan secara manual pada musim hujan sering mengakibatkan petani sering gagal mengeringkan hasil. Menggunakan pengering buatan yang ada dipasaran menambahkan biaya produksi yang cukup besar karena menggunakan energi minyak bumi, gas dan enargi listrik. Oleh karena itu, diperlukan pengering buatan yang hemat biaya, maka dari itu tugas akhir ini membuat tungku biomassa mesin pengering rumput laut  . Metodologi penelitian yang dipakai adalah metode perancangan Pahl and Beitz dengan QFD. Hasil penelitian adalah tungku biomassa ini berbahan bakar sekam padi. Tungku berdimensi 700 mm x 700 mm x 1200 mm  dan ruang bakar berdimensi 600 mm x 650 mm x 1000 mm, volume ruang bakar 0,39 m3 dan volume ruang udara panas yang dipakai 0,141229 m3, dinding ruang bakar sebagai penukar kalor menggunakan material mild steel dengan luas permukaan 1,9 m2 dan tebal dinding 4 cm serta udara yang dihantarkan kipas dengan kapasita 4053,6 CMH.   Kata kunci: Pahl and Beitz, QFD, rumput laut, tungku biomass

Corrosion Performance of Nanopaint for Automotive Application

Nanostructured coating that possessed high density of grain boundaries enable excellent physical coverage of the coated surface against corrosion and mechanical problems compared to the larger grain size of particles found in conventional paint. The current study focusses on the effect of SiO2 and TiO2 nanoparticles as additive in acrylic automotive paint for corrosion. The new paint namely nanopaints was prepared at three different concentrations. The nanopaint were characterized using Electro-chemical test and the open circuit potential (OCP) is recorded. Electrochemical test in a saltwater solution method also used to determine the potential of nanopaint concentration on automotive surfaces. The results reveal that nanoparticle additive provide better corrosion rate as compared to the original basecoat. The optimum anticorrosion behaviour for both TiO2 and SiO2 nanopaints were achieved at weight percentage of 1.5 wt% and 1.0 wt%, respectively. Therefore, the nanopaint has potential to provide better corrosion performance for automotive surface application

Seroprevalence of leptospiral antibodies among market workers and food handlers in the central state of Malaysia

Objective:The high prevalence of leptospirosis in humans is of great public health concern, particularly in tropical and subtropical regions. This study aimed to determine the seroprevalence of leptospiral antibodies and distribution of serovars, and to assess the usefulness of enzyme-linked immunosorbent assay (ELISA) as a screening method for leptospiral antibodies in a high-risk healthy community. Methods: Cross-sectional study of 231 market workers and food handlers in wet markets and food premises from two localities in central Malaysia. Respondents' background information was obtained using a questionnaire. Serum samples were tested for leptospiral antibodies using ELISA and microscopic agglutination test (MAT). Results: Seroprevalence of leptospirosis among healthy workers was 46.3%. Detection of seropositivity was higher by MAT (46%) than ELISA (15%). We observed high seropositivity among local workers (49%), food handlers (49.5%), females (60.8%) and those aged 34 years and older (46.3%). Local strain LEP175 was the predominant serovar, followed by WHO strain Patoc. Conclusion: Overall seroprevalence among healthy food handlers and market workers was high in this study. The workplace places susceptible individuals at risk of leptospirosis

Formulation of plant nutrient with synbiotic enhancement

Oleochemical wastewater discharge from the industry into water sources is one of the main causes of water pollution. A proper treatment is required before the effluent is discharged to the environment. Since the oleochemical wastewater contains nutrients and probiotics that are good for plants, it could be used as a nutrient provider for the plants instead. Therefore, the formulation of synbiotic plant nutrients from this effluent is an effective way of using the oleochemical effluent. This study aimed to formulate the plant nutrients by using industrial wastewater, which contains the synbiotic enhancement and validating the significance of the formulated plant nutrients into three types of plants; Abelmoschus esculentus (Okra), Solanum Melongena (Brinjal), and Capsicum annuum (Chilli peppers). Synbiotic is a combination of both prebiotics and probiotics that benefit the host by stimulating the growth of a limited number of health-promoting bacteria. To formulate the plant nutrient, the wastewater was filtered using a cotton cloth before the pre-biotics solution was added. Sample A (filtered wastewater was mixed with Sample B (prebiotics solution) by different percentages, namely F1 (100%:0%), F2 (75%:25%), F3 (50%:50%), F3 (25%:75%), 0%:100% (Sample A to Sample B respectively) and lastly, 50%:50% (Sample C (unfiltered wastewater) to Sample B respectively). The height of the plant and the number of leaves are measured weekly for four months. From the data, it can be seen that F3 gave significant results for the okra plant, in which it gains the highest height of plant compared to the other two plants. On the other hand, F6 give the best results for both the brinjal and the chilli plant where their leaves grow the highest from the second until the fourth month of plant growth. Hence, this research gives an added value to the wastewater, whereas the wastewater is used as the synbiotic plant nutrient enhancer and work best for the plants

Development and preliminary testing of the Dutch version of the Program for the Education and Enrichment of Relational Skills (PEERS®)

The content of interventions targeting social behavior is sensitive to cultural differences in etiquette and societal customs. Here we describe (1) the process of linguistic and cultural adaptation of the PEERS® social skills program to the Dutch language and culture, and (2) the results from a preliminary adaptation test among 32 adolescents (12–18 years old) with autism spectrum disorder (ASD). Although some important cultural adaptations were made, the similarities in effective social behaviors across cultures were most striking. At post-test, autistic adolescents significantly improved their social skills knowledge. In addition, parent-reported and self-reported social engagement (hosted get-togethers) increased. Also, social skill impairment decreased according to parent-reports. Of the 32 adolescents who completed the program, 31% (n = 10) achieved a clinically significant change on the SRS-2 (ΔSRS-2 > 11.12). Future research examining the effectiveness of the Dutch version of PEERS® should include a larger randomized controlled trial, for which we provide several methodological considerations