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Long beans are short-lived plants that are widely cultivated in Indonesia. To stimulate the growth of long beans, it is necessary to fertilize with the appropriate dose for its growth. Research on the effect of vermicompost and NPK fertilizer has been carried out in Mertak Umbak Village, Central Lombok. The purpose of the research was to determine the effect of the application of vermicompost on the growth of long beans, the effect of the application of NPK fertilizer on the growth of long beans and the interaction effect of the application of vermicompost and NPK fertilizer on the growth of long beans. The research was carried out with a 2-factor design and 4 replications. The research data were analyzed by analysis of variance. In this study, the results showed that the treatment of vermicompost significantly increased the number of leaves and plant height, but could not increase the length and width of the long bean leaves, the application of NPK fertilizer could increase the leaf length, leaf width, number of leaves and stem length of long beans and the interaction of vermicompost and NPK fertilizer treatment did not significantly affect all measured long bean growth parameters

The Tehoru earthquake occurred due to the release of stress in rocks. There is a release of energy as an earthquake as a result of the rock elasticity limit has been exceeded because the rock is no longer able to withstand the stress. One method to determine the distribution of earthquake stress is the Coulomb stress change method. The study aimed to determine the DCS of the Tehoru earthquake, Seram Island, and the effect of the main earthquake stress release on aftershocks. The research results show that the DCS distribution of the Tehoru June 16, 2021 earthquake is shown with negative lobes and positive lobes. The negative lobe is found in an area that is perpendicular to the fault plane and has been identified as having experienced relaxation, so there may be still aftershocks with stress values ranging from (0.0 – 0.3) bar. The dominant positive lobe occurs next to the southern end of the fault plane, too much located in the area of increasing Coulomb stress with values ranging from (0.2 - 0.6) bar

Telah digunakan banyak metode untuk mengkaji permasalahan gerakan tanah dari sudut pandangan pendekatan satudisiplin, interdisiplin maupun multidisiplin. Beberapa metode sedang dikembangkan untuk dipadukan dalam investigasi gerakan tanah (longsoran) selama dekade terakhir ini, fokus studi diarahkan menggunakan multidisiplin dengan pendekatan geolistrik, geoteknik dan geokimia untuk menentukan potensi gerakan tanah (longsor) Amahusu sehingga dapat memberikan mitigasi gerakan tanah. Hasil penelitian memberikan bidang gelincir longsor Amahusu dicirikan oleh anomali resistivitas dari struktur lapisan bawah permukaan yang rendah (< 50.0 Ω.m) hingga sedang (50.0 – 200.0 Ω.m), dan anomali ini mengindikasikan citra resistivitas jenis batuan lempung dan lempung pasiran, sedangkan anomali geoteknik teridentifikasi adanya tanah lempung lanau dan lanau pasiran, dan berdasarkan nilai faktor keamanan lereng (FS

Research of the Block V Wayame Ambon slide planes has been carried out using the geoelectric resissivity method of the Wenner-Schlumberger configuration. The purpose of the study was to estimate the structure of the subsurface rock layer and identify the distribution of slide plane based on the cross section of rock resistivity. The rock resistivity modeling results show the existence of a slip zone on both measurement trajectories. On the Line-1 it was assumed that two slide planes found at a depth of 2.0 m located at a distance of 6.0 m and 38.0 m, while on the Line-2 the slide planes are in 2.5 m depth is located at a distance of 28.0 m. The slip zone which is a landslide-prone area lies in the intermediate resistivity group (30-70 W.m) with the type of sand or clay sand which overlaps the high resistivity group (> 70 W.m) in the form of a hard claystone (bedrock). Landslide-prone zones can have the potential for a subsequent landslide to occur by allowing the potential spread of landslides to remain at their original location in the event of disturbances on the slopes and the opportunity to shift towards the top of the slope.

Kegagalan lereng yang terjadi pada suatu lereng memiliki bidang gelincir pada struktur bawah permukaan sehingga dapat menimbulkan bencana longsor. Bencana ini terjadi di lokasi penelitian karena berada disekitar jalur patahan sehingga sebagian tanah mengalami retak dan longsor. Bencana ini disebabkan oleh hujan dengan durasi beberapa jam dan berada di jalur patahan, sehingga tanah menjadi jenuh dan terlepas menggelincir mengikuti lereng dengan kecepatan yang tinggi dan panjang larian yang semakin jauh sampai mengendap. Hal inilah yang menyebabkan kerusakan dan kerugian, korban jiwa, pengungsian dan kerusakan lingkungan. Penelitian ini dilakukan di longsor Booi untuk menjelaskan perumusan model fisika dalam menentukan kecepatan dan panjang larian longsor menggunakan hukum kesetimbangan energi mekanik berdasarkan pada model lumped mass. Hasil analisis memberikan estimasi kecepatan maksimum 13.3 m/s di posisi 33.0 m berada pada elevasi 96.2 m.dpl dan panjang larian longsor 102.2 m. Model profil estimasi kecepatan terhadap panjang larian longsor Booi menyerupai profil kecepatan longsor Elm. Dengan demikian, semakin besar sudut kemiringan lereng terhadap sudut gesekan maka kecepatan longsor semakin tinggi dan panjang larian semakin besar. Alterasi kecepatan longsor sangat tergantung pada elevasi lereng dan jangkauan pengendapan material longsor. Kata Kunci: energi mekanik, estimasi kecepatan, longsor elm, panjang larian

One of the areas of Ambon Island that contains prospects for laterite nickel deposits is the Tanitabuntal hills, Amahusu Village, Ambon City. This laterite nickel deposit is interpreted to originate from the weathering of ultramafic rocks. This mining material is not known with certainty, so no exploration has been carried out. Field measurements used the geoelectric resistivity method with a dipole-dipole configuration. This method is used to identify the presence of laterite nickel deposits. Geoelectric surveys are used to indirectly determine the presence and dimensions of subsurface geological material layers based on the resistivity cross-sectional profile. Then, rock samples are tested in the laboratory to determine the mineralogical characteristics of the constituent structures. The results of the interpretation of the rock resistivity values obtained ranged from (20-400) Ω.m. The presence of laterite nickel deposits consisting of limonite and saprolite zones at a thickness of 7.5 m. The research area is dominated by Serpentine minerals with an abundance of more than 77.0 %, and other profusions in the form of Opak, Epidote, and Sericite minerals as associated minerals that fill the fracture.

Ambon City is a region consisting of hilly areas and steep slopes with diverse river characteristics. Research has been carried out in the Wae Ruhu watershed in Ambon City which starts from upstream (water catchment) to downstream. This study aims to determine the magnitude of river discharge and sediment discharge in the Wae Ruhu watershed. This research was conducted in several stages including, secondary data collection, research location survey, preparation of research tools and materials as well as field data retrieval processes which included tracking coordinates at each station point and entire watershed, calculation of river flow velocity, river geometry measurements, and sampling sediment. The results showed that the average river discharge in the Wae watershed in the year 2018 was 1.24 m3 / s, and the average sediment discharge was 6.27 kg / s. From the results of this study and the field observations proposed for flood prevention and the rate of sediment movement are the construction of cliffs with sheet pile and gabions.

The investigation of landslides applying various methods has been receiving increased attention in recent years. This study was aimed at assessing the estimated distribution of landslide movement using an energy conservation formula in a lumped mass model to obtain velocity and travel distance estimations, in combination with an inverted resistivity model for estimating the Amahusu landslide volume. The research location was in the Amahusu hills of the Nusaniwe subdistrict, Ambon, Indonesia. A survey was carried out using GPS and a geoelectric resistivity method with the Wenner-Schlumberger configuration. The results of the study provide a characterization of this rotational type landslide. The estimated landslide volume was 70,954 m 3 and the estimated potential landslide volume was 50,603 m 3 . This mass moved 303 m away from the original location, with an estimated maximum velocity of up to 21.25 m/s. The displacement pattern of a landslide mass is primarily controlled by the geometry of the sliding plane. The geometry of the sliding plane causes different types of movement, based on which the possible occurrence of a future landslide can be predicted .

Ambon Island is a volcanic island arc and included in the territory of the archipelago of small islands are associated with subduction zones that have a high degree of vulnerability to natural disasters, such as erosion and landslides on a particular slope conditions. This study aims to determine the dynamics of avalanches below the surface in the area of the landslide and determine the position of the gelincirnya. The study area in the mountains of Ulak Hatu Negeri Lima Ambon. Research using geoelectric of resistivity with Wenner-Schlumberger configuration. Geoelectric interpretation results correlated with the drill data to obtain landslide field located at a depth of approximately 5 m - 30 m and lithology dominated by low resistivity values with the structure of a layer of clay mixed with layers of weathered rock and clay layer with water saturated. Both of these layers contact each other and form the slope of the ground, causing the potential for critical slip thereon and allows the subsequent landslides. Critical location landslide direction of the obliquity of the avalanche that is, toward the cliff and the geometry of the type of debris avalanches of rocks and debris flow. Estimation of landslides occur in addition to the local geological conditions, but strongly influenced by rainfall reached 335.0 mm, earthquakes and coupled with a slope of 119.0%.

Investigations of landslides conducted intensive from year to year due to the intensity of the landslides that continues to increase along with the rainy season. This study aims to determine volume prediction of landslides through inversion resistivity of the subsurface in the area of the landslide. Research sites in the hills Amahusu and Erie District of Nusaniwe Ambon. Survey data retrieval using geoelectric resistivity with the Wenner-Schlumberger configuration and measurement is divided into several lines. The results of the study provide characterization of the landslide area slide-type rotation. The slip area of landslides is characterized by low resistivity and with layers of rock structure in the form of a layer of clay mixed with weathered rock and water-saturated clay layer. Predictive value of landslide volume when occurence the volume landslide for the location Amahusu of 70,953.9 m3 and Erie location of 34,042.3 m3, while the predictive value of the potential volume of landslides for the location Amahusu of 50,603.3 m3 and Erie location of 3,399.4 m3. The potential failure of a slope with a steep slope can predict occur of landslides subsequent in the original location. Keywords: landslides, volume prediction, inversion resistivity, slope failure.

Observation of the stress and strain in materials steel, brass and anneal is done by testing to determine the tensile modulus of elasticity of the material. The results showed that the modulus of elasticity of the material brass is smaller than the brass alloy steel and steel materials, caused by the formation of the composition of the material is different. The relationship between stress and strain are used to gain slope value, and this value used to determine the modulus of elasticity of steel materials, brass and anneal. The analysis showed that the magnitude of the modulus of elasticity of brass material brass=(20.10  1.60) x109 Pa, anneal materials anneal=(68.10  2.20) x109 Pa, and steel materials steel=(201, 00  5.30) x109 Pa. The results of tensile tests conducted on all three materials can be used to determine the comparative figures Poisson. The analysis showed the amount of comparative figures in steel material Poisson msteel=0.106  0.002, brass material mbrass=0.104  0.002 and anneal materials manneal=0.103  0.005. Figures Poisson appeal on steel materials is greater than the brass and anneal

Has done research on different container and the syringe bulb to determine the number of moles of air. If the gas or air is introduced into the syringe or bulb then the more air is forced into it. The analysis uses Boyle-Mariotte law shows that the number of moles of air in the syringe with constant temperature and number of moles of air at constant volume is a sphere with eqqual 0.02 mol. Thus two different media (cylindrical and spherical), giving the same number of moles. Obtaining the number of moles show that the application of Boyle-Mariotte is derived from the ideal gas law is appropriate.

Telah digunakan banyak metode untuk mengkaji permasalahan longsor dari sudut pandangan pendekatan satu-disiplin, interdisiplin maupun multidisiplin. Beberapa metode sedang dikembangkan untuk dipadukan dalam investigasi longsor selama dekade terakhir ini, fokus studi diarahkan menggunakan pendekatan investigasi multidisiplin seperti survei geolistrik, geoteknik dan geokomputasi untuk menentukan potensi longsor sehingga dapat meminimalisir bencana longsor. Hasil kajian memberikan bidang gelincir terletak pada kelompok resistivitas menengah dengan jenis pasir atau pasir lempungan yang menindih kelompok resistivitas tinggi yang berupa batulempung keras (bedrock). Berdasarkan nilai faktor keamanan lereng, bidang gelincir ini berada pada keadaan kurang stabil. Sedangkan penerapan geokomputasi menunjukkan lokasi kajian ditafsirkan berada dalam zona bahaya yang tinggi sehingga sangat berpotensi adanya longsor susulan. Dari hasil kajian terpadu, lokasi kajian masih dalam kondisi tidak aman dan bisa terjadi longsor susulan jika dipicu oleh faktor luar. Untuk meminimalisir longsor susulan dengan menurunkan muka air tanah adalah menggunakan model tol air dengan memanfaatkan sungai-sungai kecil/besar yang terdapat di bawah lereng/tebing untuk dapat dialirkan air pada musim hujan

Ambon Island is a volcanic islands arc and included in the territory of the archipelago of small islands are associated with subduction zones that have a degree of high vulnerability to natural disasters, such as erosion and landslides on the slopes of certain conditions. Landslides that occur various in the city of Ambon, usually occurs during the rainy season so that the impacts that occur not only occurs on site but also off site with amount of large sedimentation. This paper presents the application of digital image analysis techniques and tools Geographic Information Systems to describe the degree of landslide hazard and risk areas in locations Ambon City, Moluccas. The cause of the landslide is analyzed through various thematic layers attribute data for the study area. Landslide hazard zonation assessment is done by using historical data, while the landslide risk analysis is done by using the results of landslide hazard assessment and socioeconomic factors by using geospatial models. The risk assessment of landslides can be used to estimate the risk to the population, property and infrastructure. The study results in the form of a map of landslide hazard and the risk of landslides that act to support urban spatial planning based on disaster mitigation.