Studi Hidrogeofisika Gunung Malabar Sebagai Gunung Tertinggi pada Sistem Hidrologi Cekungan Bandung

Gunung Malabar merupakan gunung tertinggi pada gugus pegunungan yang mengitari Cekungan Bandung Purba. Kawasan ini tersusun oleh berbagai pegunungan kecil, yaitu Gunung Haruman, Gunung Puntang dan dataran tinggi Pangalengan. Vegetasi di kawasan Gunung Malabar masih cukup lebat dan kawasan ini juga sering mengalami hujan dengan intensitas yang tinggi. Kondisi tersebut menjadikan Gunung Malabar sebagai recharge area dan catchment area yang ideal dengan area cukup luas. Artikel ini mengulas hasil penelitian hidrologi menggunakan metode geofisika untuk mengkaji pengaruh kawasan Gunung Malabar terhadap sistem hidrologi Cekungan Bandung Purba. Metode yang digunakan pada penelitian ini adalah Resistivitas-DC dan Very Low Frequency. Selain itu, pengukuran sifat fisik dan kimia air juga dilakukan untuk mendapatkan nilai kualitas baku mutu air permukaan berdasarkan parameter TDS, pH, dan EC. Pengukuran Resistivitas-DC dilakukan di dua wilayah yaitu di Lereng Utara Gunung Malabar, diperoleh rentang nilai resistivitas air tanah sekitar (1.4-70)Ωm, sedangkan di lereng barat Gunung Malabar, diperoleh rentang nilai resistivitas air tanah sekitar (20-150)Ωm. Kombinasi metode Resistivitas-DC dengan VLF di lereng barat Gunung Malabar menunjukkan bahwa recharge area dari sistem hidrologi di Gunung Malabar terbentuk pada zona lapisan dangkal (sekitar 15 m) dan menengah (sampai dengan 40 m). Selain itu, studi ini juga menunjukkan kualitas air tanah di kawasan Gunung Malabar. Hasil yang diperoleh dari pengukuran sifat fisik dan kimia air yaitu diperoleh rentang untuk parameter TDS dengan nilai (20-70) ppm, pH dengan rentang 6.20-8.48, dan EC dalam rentang (43-130)KataKunci : Cekungan Bandung, Gunung Malabar, Resistivitas-DC, Very Low Frequency, sifat fisik dan kimia air.

Current Understandings on Magnesium Deficiency and Future Outlooks for Sustainable Agriculture

The productivity of agricultural produce is fairly dependent on the availability of nutrients and efficient use. Magnesium (Mg 2+ ) is an essential macronutrient of living cells and is the second most prevalent free divalent cation in plants. Mg 2+ plays a role in several physiological processes that support plant growth and development. However, it has been largely forgotten in fertilization management strategies to increase crop production, which leads to severe reductions in plant growth and yield. In this review, we discuss how the Mg 2+ shortage induces several responses in plants at different levels: morphological, physiological, biochemical and molecular. Additionally, the Mg 2+ uptake and transport mechanisms in different cellular organelles and the role of Mg 2+ transporters in regulating Mg 2+ homeostasis are also discussed. Overall, in this review, we critically summarize the available information about the responses of Mg deficiency on plant growth and development, which would facilitate plant scientists to create Mg 2+ -deficiency-resilient crops through agronomic and genetic biofortification.

Impacts of Nicotiana glauca Graham Invasion on the Vegetation Composition and Soil: A Case Study of Taif, Western Saudi Arabia

Invasive species are considered a serious problem in different ecosystems worldwide. They can compete and interfere with native plants, leading to a shift in community assembly and ecosystem function. The present study aimed to evaluate the effects of Nicotiana glauca Graham invasion on native vegetation composition and soil of the most invaded locations in the Taif region, Western Saudi Arabia, including Alwaht (WHT), Ar-Ruddaf (RDF), and Ash-shafa (SHFA). Plant species list, life span, life form, and chorotypes were assessed. Six locations highly infested with N. glauca shrubs were selected, and the morphological parameters of the shrubs were measured. Within each location, richness, evenness, relative density of species, and soil were measured either under the canopy of N. glauca shrubs or outside the canopy. Floristic analysis revealed the existence of 144 plant species, mainly perennial. The shrubs at the SHFA1 location showed the highest values of all measured morphological parameters. The WHT 1 location showed high richness and evenness, while the WHAT 2 location showed less richness and evenness. The invaded locations showed substantial variation in the community composition. Additionally, the effect of N. glauca on the understory species varied from competition to facilitation, where most of the understory species were inhibited. As an average of all locations, 65.86% of the plant species were recorded only outside the canopy of N. glauca. The vegetation analysis revealed that the SHFA location is more vulnerable to invasion that could be ascribed to its wide range of habitats and high disturbance. The soil–vegetation relationships showed significant variations among the studied locations regarding soil composition, and thereby showed a wide ecological range of the invasive shrubs N. glauca. Therefore, the invasion of N. glauca in the Taif region altered the species interactions, nutrients, and soil properties.

Recurrence rate in patients with acute immune thrombocytopenic purpura in Ahvaz, southwest of Iran: Corticosteroids versus intravenous immunoglobulin

Immune thrombocytopenic purpura (ITP) is known as the most important cause of sudden drop in platelet count among children. The acute form of unexpected drop in platelet count in children calls for treatment with medications such as corticosteroids, intravenous immunoglobulin (IVIg), and Rho(D) immunoglobulin (anti-DIG). Most of the previous studies have accordingly compared short-term therapeutic outcomes of steroids with those of IVIg. In some cases, IVIg has led to better results. However, there are few studies on the long-term treatment effects of both medicine categories. Objectives: This study was aimed to evaluate the therapeutic effects and recurrence rate (RR) of corticosteroids, IVIg, or both in the long-term to find the best and most effective treatment for these patients. Patients and Methods: A total of 188 children diagnosed with acute ITP were admitted to the hematology departments of Shafa and Baghaei hospitals of Ahvaz, Khuzestan, Iran. The therapeutic consequences and RRs of corticosteroids, IVIg, or both were compared within one year. Results: Comparing treatments employing corticosteroids and IVIg in children having acute ITP in terms of the long-term treatment outcomes showed no statistically significant difference. In addition, the findings revealed that 34% of the patients had experienced recurrence within one year with no remarkable difference between both drug groups. Conclusion: The long-term therapeutic outcomes in both medicine categories were not significantly different. Therefore, given the world’s current economic conditions and inadequate supply of all medicines, it seems more rational to use the least expensive drugs.

Meningkatkan kewaspadaan masyarakat terhadap Covid-19 pada masa PPKM di Kelurahan Cibodasari

The Covid-19 pandemic has hit Indonesia since March 2020 until now. All components of the Indonesian state must unite to overcome the pandemic. One of the tangible forms of community service from Sultan Ageng Tirtayasa University is to increase public awareness of Covid-19 during the Enforcement of Restrictions on Community Activities in Cibodasari Village. Community service activities carried out include socializing covid-19, spraying disinfectants, and socializing the Enforcement of Restrictions on Community Activities. The activity was carried out in a hybrid manner by implementing a strict health protocol. The result of the implementation of these activities is that the residents of the Cibodasari sub-district are increasingly aware of Covid-19 so that the discipline in applying health protocols is felt, the wider impact is felt at the Tangerang City level by decreasing the level of the Bed Occupancy Ratio.

Implementasi Pendidikan dalam Al-Qur’an Bagi Generasi Muda di Indonesia

Isolasi Senyawa Turunan Kuinon dari Tanaman

Indonesia merupakan negara kepulauan dengan kekayaan flora dimana 7.000 spesies diantaranya dikategorikan tanaman obat yang memiliki beragam khasiat. Dengan keanekaragaman hayati tersebut, terdapat pula keanekaragaman kimiawi seperti metabolit sekunder dan salah satunya adalah kuinon. Review artikel ini dibuat dengan tujuan memberikan informasi dan pembuktian mengenai isolasi yang terdapat pada tanaman yang diduga memiliki senyawa turunan kuinon. Pembuktian dilakukan dengan metode ekstraksi, fraksinasi, dan isolasi dengan pelarut dan menggunakan cara yang berbeda-beda. Metode yang digunakan dalam review ini berdasarkan studi literatur yang dianalisis dari beberapa publikasi ilmiah di jurnal nasional maupun internasional. Hasil yang diperoleh didapatkan bahwa isolat dari tanaman aloe vera, bisbul, mengkudu, hedyotis caudatifolia Merr dan ceratotheca triloba menunjukan respon positif terhadap pengujian yang dilakukan, sehingga dapat disimpulkan bahwa masing masing tanaman mengandung senyawa turunan kuinon.

M A T E R I A L S OF THE VI INTERNATIONAL SCIENTIFIC RESEARCH CONFERENCE

BENTUK DUKUNGAN ORANG TUA PADA ANAK USIA DINI (AUD) SELAMA BELAJAR DARI RUMAH (BDR)

Penelitian ini merupakan studi literatur yang bertujuan untuk mengetahui gambaran dari bentuk dukungan orang tua terhadap Anak Usia Dini (AUD) selama Belajar Dari Rumah (BDR) saat masa pandemi COVID-19. Hal ini dikarenakan, AUD memerlukan pelayanan lebih dibandingkan dengan jenjang pendidikan lainnya, terlebih lagi dalam situasi pandemi saat ini. Untuk mendapatkan gambaran dari bentuk dukungan orang tua terhadap AUD selama BDR, metode yang kami gunakan dalam penelitian ini adalah metode penelitian deskriptif kualitatif dengan studi literatur. Dalam penelitian studi literatur ini, peneliti menggunakan sumber tertulis seperti artikel dan jurnal yang sesuai atau relevan dengan penelitian yang dilakukan. Temuan dari penelitian ini adalah dukungan dari orang tua pada AUD adalah dukungan instrumental, penghargaan, yang bentuknya berupa semangat, motivasi, perhatian, dan membantu anak dalam proses pembelajaran. Hasil dari penelitian ini adalah salah satu keberhasilan pembelajaran AUD dari rumah adalah dukungan dan keaktifan orang tua.

Estimation of Tourism Demand and Supply Functions for Azerbaijan: 2SLS Approach

In this paper, there was investigated tourism demand and supply functions in the case of Azerbaijan. The authors have applied the 2SLS method to identify these functions. The authors came to the conclusion that the demand function of tourist trips to Azerbaijan varies depending on the level of income of tourists’ origin countries and the price level in Azerbaijan. Unfortunately, the COVID-19 pandemic impacts not only the restriction policy of origin countries, as well as income in these countries. By decreasing the income levels of the population in these countries will be decreased the number of tourists to Azerbaijan.