Jurnal Sains Teknologi dan Lingkungan (JSTL)
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Terapi Saat Ini untuk Chronic Inflammatory Demyelinating Polyradiculoneuropathy (CIDP): Sebuah Literature Review
Full text linkChronic inflammatory demyelinating polyradiculoneuropathy (CIDP) is an autoimmune disease. The European Academy of Neurology recommends treatment using corticosteroids, immunoglobulin, plasma exchange, & other treatments as treatment options for chronic inflammatory demyelinating polyradiculoneuropathy. However, several studies in recent years have shown that there is potential in the treatment of chronic inflammatory demyelinating Polyradiculoneuropathy. The aim of this literature review is to provide the latest therapy for chronic inflammatory demyelinating polyradiculoneuropathy based on guidelines as well as other information therapy alternatives. The method used in this literature review uses searches in several databases. The results of several studies show the development of chronic inflammatory demyelinating polyradiculoneuropathy therapy both pharmacologically & non-pharmacologically. The development of therapy for chronic inflammatory demyelinating polyradiculoneuropathy, namely hematopoietic stem cells & spinal cord stimulation, shows potential as a therapeutic option for patients with chronic inflammatory demyelinating polyradiculoneuropathy
Sifat Rheology dan Sifat Mekanis Beton Semi Ringan Batu Apung dengan Penggantian Sebagian Semen dengan Abu Sekam Padi
Full text linkFrom point view of earthquake engineering, the greater the mass of a structure, the greater the shear force imposed on the structures, and vice versa. To obtain a lightweight strong structure, lightweight concrete can be used instead of conventional concrete. Lightweight concrete can be made from various types of coarse aggregates, such as pumice. Smooth cracks occurred on the concrete surface due to hydration can be prevented by reducing cement content. Some amount of the cement can be replaced with natural pozzolanic which relatively easy and low-cost to produce. This research is to examine rheological and Mechanical properties of semi light-weight concrete due to partial replacement of cement content with Rice husk ash. The rice husk ash was prepared by burning Rice Husks in a furnace at a temperature of 700°±50°C for 4-hours. The chemical properties of both the Rice Husk Ash and Pumice was also tested in laboratory. In this study, the Compressive strength f’c and the Modulus of Elasticity of concrete Ec were tested with 15x30cm cylindrical specimens prepared according to SNI-1974-2011 tested at age of 28, 56 and 90 days. Based on a series of tests conducted, it was found that the Rheological properties of Semi-Light Pumice Concrete was greatly governed by the Rice Husk Ash. Furthermore, Partial cement replacement with Rice Husk Ash was potentially to be used with an optimum of 5% cement content. The compressive strength and Modulus of Elasticity of Semi Lightweight concrete are influenced by the age of the concrete testing
Pengaruh Tumpangsari Jagung (Zea mays L.) dengan Famili Fabaceae terhadap Populasi dan Pertumbuhan Gulma Serta Efisiensi Penggunaan Lahan DI Lahan Kering
Full text linkThe research aims to examine the effect of intercropping corn with the fabaceae family on weed population and growth as well as land use efficiency. The research was designed with a single factor treatment with a randomized block design in 3 blocks. This treatment is a monocrop planting pattern and intercropping of corn with peanuts, soybeans, green beans, red beans and cowpeas. The parameters observed include the weight of dry biomass and dry seeds of plants, the population and weight of dry biomass of weeds. As a result of the research, 16 weed species were found with high species diversity, evenness, dominance and abundance. It was found that 6 species of weeds were dominant and existed during plant growth, namely Cyperus rotundus, Paspalum vasginatum, Leersia hexandra, Digitaria longiflora, Cynodon dactylon, Synedrella nodiflora and Amaranthus gracilis. Peanuts and cowpeas are suitable for intercropping with corn because they can reduce the population and growth of weeds and do not compete with corn. Soybeans, green beans and red beans are not suitable for intercropping with corn because they are not effective in suppressing the population and growth of weeds and compete with corn, so that corn yield losses due to weed competition are 62.37% - 63.77% and corn yield losses due to crop competition reach 38.20 % – 40.96 %. The best ecological and agronomic land use efficiency was obtained from intercropping corn with peanuts and cowpeas, with land equalization values ​​(LEV) based on plant biomass weight of 1.90 and 1.89 and based on dry seed weight of 1.79 and 1.78 (LEV > 1)
Pengukuran Konsentrasi Coarse Particle di Ruangan dengan Sistem Kontrol Temperatur Udara
Full text linkParticulate matter is an air emission that is compossed of particle and liqud dropplet. This suspension is easily measured in several size distributions: ultrafine particle, fine particle, coarse particle, and total suspended particle. Coarse particle is commonly used as a parameter of air quality index. This research aims to measure coarse particle concentrations inside an air-conditioned room. The measurement was conducted using a particulate sensor and a microcontroller for an hour. All measurements were varied into: active and non active room conditions. The results show that human activities and movements in the first variation has higher concentration than the second one. The difference is about 12 µg/m3. human activities have a significant role in the submicron particulate distribution inside a room. Air-conditioned room has higher concentration than a common room
Pengaruh Variasi Diameter Pipa Primer Terhadap Pola Resapan Air Irigasi tetes Bertingkat Pada Media Tanam Polybag
Full text linkMultilevel drip irrigation is an irrigation method that supports water-saving agricultural activities in limited areas by channeling water through perforated pipes from emitters. The ideal multistage drip irrigation system can provide the same drip volume to plants, so the distribution of irrigation water and its depth need to be important factors to pay attention to in order to provide optimal plant irrigation. This research aims to determine the effect of using variations in primary channel pipe diameter on the distribution of drip irrigation and the depth of infiltration of irrigation products in a 3 (three) tier drip irrigation network. Tests were carried out on primary pipes from floors 1 to 3 with a diameter of ½", ¾" and pipes 1", with lateral drip pipes with ½" PVC. The size of the test field is 4 m x 1 m x 1.8 m and the distance between levels is around 0.9 m and the irrigation water source from a 200 liter tank is 2.5 m high. The research results showed that irrigation distribution results were quite good at all levels of the irrigation network, namely 70 ml and 68 ml. Irrigation patterns do not have a significant effect on the results of irrigation distribution due to variations in primary pipe diameter. A soil composition of 30% compost has achieved irrigation infiltration with a depth of 21 cm, including the fastest, namely 25 minutes and for 70% soil, an irrigation infiltration time of 35 minutes is required
Analisis Erosi dan Sedimentasi di Sub Das Alo-Pohu Kesatuan Pengelolaan Hutan Vi Gorontalo
Full text linkGorontalo Province has topography in the form of lowlands to highlands which is shaped like a basin and most of Gorontalo Province is a water catchment area. One of the rivers with quite high sedimentation levels is the Alo River. To avoid more severe damage, technical conservation steps need to be taken, one of which is by building serial and continuous Check Dams. This research aims to determine erosion and sedimentation control and its effectiveness in the Alo watershed. The research method used was a direct survey method at the activity location, interviews with related agencies and people who were active at the location, then analysis was carried out. The stages begin with collecting primary data, secondary data. The data analysis used is using the Smith and Wischmeier (1978) equation known as the Universal Soil Loss Equation (USLE) A = R x K x LS x C x P. The results of the research show that the activities The construction of the Check Dam was carried out in 2021 by the Environment and Forestry Service of Gorontalo Province through KPH VI Gorontalo which is located in Buhu Village, Gorontalo Regency. The results of studies in the field show that the width of the Alo River is narrowing and experiencing shallowing, marked by the appearance of deltas at several points. On average, the width of the Alo river is only around 3-4 meters with a depth of around 10-15 cm. The conclusion of this research is 4. The Check Dam built by DLHK Gorontalo Province through KPH VI does not function well in dealing with erosion and sedimentation that enters the Alok River due to lack of maintenance and involvement of the local community.
Keywords: Soil conservation, Water, Gorontalo
Pertumbuhan dan Hasil Tanaman Jagung Manis (Zea mays L. Saccharata Sturt.) Akibat Defoliasi Daun Pada Waktu dan Jumlah Yang Berbeda-Beda
Full text linkOne effort to increase sweet corn production is to defoliate the leaves at the right time. The problem is, how many leaves and when is the right time to defoliate them is not yet known. Therefore, research was conducted which aimed to determine the effect of the number of leaves and defoliation time interval on the growth and yield of sweet corn. The research was carried out in Nyurlembang Village, Narmada District, West Lombok Regency, in July - November 2022. Experimental research method with a factorial completely randomized block design grouped into three blocks. The first factor tested was the number of leaves defoliated, namely 0, 2, 4 and 6 pieces. The second factor is defoliation time, namely when the plants are 28, 42 and 56 days after planting.. Data were analyzed using farian analysis and continued with the LSD test at the 5% level. The results showed that defoliation of the number of leaves at different times had a significant effect on the growth and yield of sweet corn. There was no interaction between the two independent variables on the growth and yield of sweet corn. Defoliation of 2 leaves carried out when the plants were 28 HST had a negative effect on plant growth and yield and was not significantly different from no defoliation treatment. Defoliation of 4-6 strands carried out when the plants were 42 – 56 HST, was able to produce cob length, cob diameter, number of rows of cobs-1, weight of fresh cobs ha-1, dry shell weight ha-1; and the weight of 100 dry seeds is significantly higher than the defoliation of 2 leaves and 0 leaves, so it needs to be applied in future sweet corn planting efforts.
 
Keragaan Mutan M3 Padi Beras Merah (G16) Hasil Iradiasi Sinar Gamma 200 Gy
Full text linkThis study aims to determine changes in yield and correlation between quantitative traits of mutant plants of the M3 generation of G16 brown rice irradiated with 200 Gy gamma rays. The research method used was an experimental method which was carried out with field experiments and took place in paddy fields in Tatar Hamlet, Nyurlembang Village, Narmada District, West Lombok Regency, West Nusa Tenggara which was carried out from May to November 2022. The research was arranged using a Randomized Block Design (RAK) in a partitioned design. The treatment consisted of 33 genotypes resulting from gamma irradiation mutations and 3 comparators as test genotypes namely G16, Cigelis and Inpari 32. Each tester genotype was repeated 3 times, so that 42 experimental units were obtained. Observations were analyzed using analysis of variance and a 5% level of phenotypic correlation coefficient. Quantitative traits that show significant results were tested further using the Honest Significant Difference (BNJ) at the 5% level of significance. The results showed that 200 Gy of gamma irradiation did not change the yield of the M3 mutant strain. On the other hand, the criterion of the phenotypic correlation coefficient of the observed quantitative traits showed a significant difference with the results. Plant height and filled grain weight gave a very strong real correlation, while strong criteria were indicated by the longest panicle and number of filled grains, and panicle length and empty grain weight obtained a sufficiently significant correlation, and very weak criteria were obtained on flowering age, total tiller number, number of productive tillers, number of empty grain and 100 grain weigh
Uji Irigasi Tetes Bertingkat Empat Pada Media Tanaman Campuran Tanah Cocopeat dan Kompos Ternak Terhadap Resapan dan Lengas Tanah
Full text linkThe utilization of multilevel drip irrigation needs to be supported by adequate planting media so that the provision of irrigation water is optimal. The planting media used practically uses soil mixed with livestock waste compost and cocopeat in polybags. This test aims to determine the ability of drip irrigation water absorption by the planting media in the form of irrigation depth and soil moisture provision and prediction of irrigation application with a certain duration. The study was conducted on a ½†PVC pipe drip irrigation network with a 2 lt/hour emitter, on a land size of 2 m x 4m x 2m with a water source from PDAM water which is stored in a tank with a capacity of 150 liters and a height of 2.5 m. The test data taken includes data on the distribution of irrigation volume, irrigation depth and soil moisture.
The results of the analysis showed that the distribution of drip irrigation depth in cocopeat media ranged from 7.5 cm - 12 cm in 5 minutes, while in rice husks the absorption was around 6.5 cm - 10 cm for the planting media level, with an average Cu of 96% which is very good. The maximum soil moisture that can be provided by four-tiered drip irrigation at a duration of 5 minutes is 30.5% in the early growth phase and at a duration of 10 minutes the average soil moisture is 15%, in the Vegetative phase of plant growth until fruit ripening. So the high irrigation infiltration rate in cocopeat media has the potential to be applied to plants that have long or deep roots, while planting media with rice husks has the potential to be applied to plants with short roots such as vegetables
Pola Pertumbuhan Karang Genus Acropora Hasil Transplantasi Pada Media Blok Mars dan Meja di Perairan Pantai Pandanan Lombok Utara
Full text linkPantai Pandanan yang terletak di Desa Malaka kecamatan Pemenang merupakan salah satu destinasi wisata pantai yang terletak di Lombok Utara. Pantai Pandanan memililiki ekosistem terumbu karang yang mendukung keanekaragaman hayati lokal dan merupakan bagian penting dari ekosistem laut setempat. Penelitian ini bertujuan untuk membandingkan pertumbuhan karang Acropora yang ditransplantasi menggunakan dua jenis media, yaitu blokmars dan meja, di perairan Pantai Pandanan, Lombok Utara. Penelitian dilakukan selama empat bulan, dari Mei hingga Agustus 2024, dengan pengamatan pertumbuhan panjang karang setiap bulan. Hasil penelitian menunjukkan bahwa karang yang ditransplantasi pada media blokmars mengalami pertumbuhan yang lebih signifikan dibandingkan dengan media meja. Rata-rata pertumbuhan karang pada media blokmars meningkat lebih cepat pada awal periode transplantasi, sedangkan pada media meja pertumbuhannya lebih lambat. Media blokmars terbukti lebih stabil dan efektif dalam mendukung pertumbuhan karang, karena memiliki struktur yang memfasilitasi perlengketan dan penyediaan nutrisi yang optimal. Berdasarkan hasil ini, media blokmars direkomendasikan sebagai pilihan yang lebih baik untuk kegiatan rehabilitasi terumbu karang