Community managed Drinking water in Lapalang village: A challenge from Coliform Contamination

The present communication is the result of the analysis of drinking water of Lapalang village in Pynursla Block, East Khasi Hills District of Meghalaya performed in order to rule out the unscientific claims by villagers that the village drinking water is likely to have high concentration of lime. Water samples collected from the source (spring), storage tank and tap are analyzed in State food testing laboratory, Directorate of Health Services, Government of Meghalaya. The study shows that spring water is fit for consumption, however the same water supply collected from storage tank and tap is highly contaminated with coliform bacteria.

Determination of optimal parameters of vibrо-activation of hydrated lime

The method of mechanical activation of hydrated lime in a vibrating activator of bunker type was offered in this work. The influence of design features and angle of fixing of vibrating blades on the speed and degree of dispersion of hydrated lime was investigated by measuring the change in the logarithmic decrement of mass attenuation during vibro-activation. The effect of the duration of the vibro-activation process on the dispersion in the system "hydrated lime–water" was studied. The efficiency of lime dispersion was shown in the case of mounting the blades at the angle of 860 for 40–60 minutes. Comparative studies of the strength of cement stone showed that the addition of vibro-activated hydrated lime in an amount of 2 wt.% leads to an increase in the strength of lime-cement compositions.

Compressive Strength of High-Volume Fly Ash (HVFA) Concrete as a Function of Lime Water and Curing Time

The compressive strength of high-volume fly ash (HVFA) concrete with varied volume percentages of 40%, 50%, and 60% was examined utilizing low calcium fly ash (Class-F) as a partial replacement for regular Portland cement in this study. On the 7th, 28th, and 56th days, the compressive strength is tested. At the 7th and 28th days, the influence of saturated lime water on the compressive strength of HVFA concrete is evaluated. The inclusion of fly ash as a replacement for Portland cement reduces the compressive strength of the HVFA concrete, according to the findings. At the 56th day, the HVFA concrete with 40% fly ash substitution has a compressive strength equivalent to the regular weight concrete. At the 28th day, it was discovered that saturated lime water was helpful in maximizing the strength of HVFA concrete with 50% fly ash substitution. There was additional information about the characterization of HVFA concrete.

Seed Priming and Priming Duration Influence on Growth and Yield of Wheat (Triticum aestivum L.) under Rainfed Condition of Hilly Uttarakhand

Insufficient stand establishment of winter wheat is a major problem in the rainfed region of the Uttarakhand hills. In order to increase germination and early establishment in the field under rainfed condition of hilly tracts this study was conducted at college of forestry VCSG University of Horticulture and Forestry, Ranichauri, Tehri Garhwal, Uttarakhand, India. The ten treatments were laid out in randomized block design with three replications in field. The treatments were VL 892 primed for 12 hrs with normal water, VL 892 primed for 24 hrs with normal water, VL 892 primed for 12 hrs with lemon water, VL 892 primed for 24 hrs with lemon water, VL 829 primed for 12 hrs with normal water, VL 829 primed for 24 hrs with normal water, VL 829 primed for 12 hrs with lemon water, VL 829 primed for 24 hrs with lemon water, VL 892 with no priming, and VL 829 with no priming. Significantly higher grain Yield of wheat was recorded in VL 829 primed with normal water for 24 hours which was statistically on par with VL 829 primed for 12 hrs with normal water, VL 892 primed for 24 hrs with normal water and VL 892 primed for 12 hrs with normal water. Significantly higher grain yield was recorded in case of priming with normal water than the priming with lime water.

RESPON PERTUMBUHAN ANAKAN BELANGERAN TERHADAP PENYIRAMAN AIR RAWA GAMBUT, AIR TANDAN KOSONG KELAPA SAWIT, DAN KAPUR DOLOMIT

The research aimed to analyze the growth response of belangeran (Shorea balangeran) seedlings on the water of palm oil empty bunches and dolomite lime. The research used a method of a completely randomized design, with the treatments: dolomite lime water, oil palm empty bunch water, and peat swamp water as a control. Based on the ANOVA, the treatment had a very significant effect on the increase of height and diameter of the seedlings. The dolomite lime water increased the seedling height of 9.434 cm, followed by oil palm empty bunches with height increase of 6.800 cm, and peat swamp water/control with the increase of 5.434 cm. Based on the LSD test, the height increase by dolomite lime water treatment was very significantly different from the height increase by oil palm empty bunches water and the height increase by peat swamp water. The water treatment of empty oil palm bunches increased diameter of 0.156 cm, followed by dolomite lime water with the increase of 0.147 cm, and peat swamp water with the increase of 0.128 cm. Based on the LSD test, the increase in diameter by the oil palm empty bunches was very significantly different from the diameter increase by the control, but was not significantly different from the increase diameter by the dolomite lime water. It is advisable to mix peat swamp water with dolomite lime with a concentration of 100 grams/200 liters or oil palm empty bunches with a concentration of 5 empty bunches/200 liters of water before using it to water the belangeran seedlings.

Pembuatan pakan alami untuk pengembangan kepiting cangkang lunak di Desa Pulau Cawan Kecamatan Mandah kabupaten Indragiri Hilir

Mud crabs are mangrove crabs that are cultivated and harvested when molting so that their shells become soft and easy to consume. The purpose of this activity is to increase people's income in Desa Pulau Cawan, Kecamatan Mandah, Kabupaten Indragiri Hilir, through soft shell crab cultivation by introducing environmentally friendly cultivation techniques, but it can produce added value in terms of improving the family's economy through soft-shell crab cultivation, one of which is training in making natural feed. This is based on information from farmers who have never received training on feed manufacturing. Through the foster village program, knowledge and technology are given about techniques for making natural feed from lime water and spinach extract as a substitute for vitamalt which is quite expensive. The methods used in the Community activities of the foster Village are lectures, discussions and direct practice with POKDAKAN, starting with the preparation of spinach extract, trash fish, lime water, mixing and drying. The results of the evaluation of the counseling participants showed that 24 participants had never known about making natural feed from lime water and spinach extract as soka crab feed. After participating in this training activity there was an increase of 86.96% in knowledge about how to make natural feed. The partner's assessment of the implementation of this activity is 52.17% strongly agree that this natural feed can be made independently; 52.17% strongly agree that giving lime water and spinach extract to the artificial feed mixture of trash fish has an effect on the acceleration of the molting process in crabs and does not affect the survival of crabs; 60.87% strongly agreed that it could be an alternative livelihood; strongly agree that the molting process in soft-shell crab cultivation is the same as when the crabs are given a vitamolt, which is 20 days.

Сriteria for research of the process of dispersion of the system of hydrate lime-water

The process of dispersion of slaked lime in a vibrating activator of the bunker type is investigated. The nature of the change in the viscosity of lime dough during machining by vibration and rotary viscometer has been studied. It is established that the process of vibroactivation of hydrated lime successively goes through the stages of proportional growth of dynamic viscosity, slowing down its growth and cessation of dispersion. The efficiency of using the vibration method for determining the viscosity of the hydrated lime – water system is shown.

CHARACTERISTICS OF SWEET DRY FRUIT TALOK (Muntingia calabura) WITH BLANCHING VARIATIONS AND TIME SOAKING IN CaCL2

ABSTRACTOne type of plant that can be used as a medicinal plant is talok or kersen (Muntingia calabura). Talok fruit is round and red when ripe. Ripe fruit for jaundice, to treat gout. Talok fruit is easily damaged, so it is not durable to store. Storage in fresh form, fruit quickly decays. The nutritional content of talok (kersen) is quite large but has not been utilized properly. This study aims to determine the characteristics of dried candied talok (kersen) with a variety of blanching and soaking time in lime water, in order to obtain good quality sweets and preferred by consumers. Candied fruit is expected to be used as filler for bakery products or other food products. This research was conducted at the Laboratory of the Faculty of Agricultural Technology, State Polytechnich of Jember. This study used a complete factorial randomized complete block design, with blanching variation factors (without blanching, water blanching, and steam blanching) and soaking time in betel lime water (1, 2, 3 and 4 hours). The analysis carried out included Water Content, Ash Content, Vitamin C, Total Sugar Levels, Antioxidant Levels, and Organoleptic Tests (color, sweet taste, talak fruit taste, overall preference). The results showed that dried candied talok fruit was favored by having a water content of 10.95%, ash content of 3.53%, vitamin C levels of 40.665 mg / 100 g, and anti-oxidant levels of 84.91%. The results were obtained from the long immersion treatment in betel lime water for 4 hours and with deep blanching treatment. In this treatment the panelists as a whole liked and still met the quality standards for dried sweetsKey words: dried candied kersen, blanching, time soaking

Conservation of underwater cannonball heritage obtained from a shipwreck in the sea of Batavia, Jakarta, Indonesia

The Borobudur Conservation Center in Magelang, Central Java, Indonesia has received underwater cannonballs from a shipwreck in the sea near Batavia, Jakarta, Indonesia. This artifact is a shipment from the Directorate for the Preservation of Cultural Heritage and the Indonesian Ministry of Education and Culture. This study aims to conserve the underwater cannonball before it is stored in a museum. The removal of the protective crust of iron artifacts without the correct and proper method can cause rapid corrosion. To prevent damage, artifacts must be conserved in the right solution. This research aims to stop the process of corrosion and conserve iron objects in aqueous alkali solutions, and the potential corrosion was measured. Conservation was conducted in four stages during this research project. The first stage is the identification of weathering, and the second stage is the analysis and characterization of the corroded surface using a microscope, XRD (X-ray diffraction), XRF (X-ray fluorescence), and SEM (scanning electron microscopy). The third stage is the passivation/deactivation process, which was achieved using sodium hydroxide, soapy water and kaffir lime water. The fourth stage is stabilizing/coating the iron cannonball underwater heritage materials as soon as possible using microcrystalline wax to prevent further corrosion, so this stage should solve the conservation problems associated with the object so that the objects can last for a long time. Dry and wet activated corrosion was characterized by applying XRD to the obtained mineral akageneite. The akageneite minerals were actively corroded and contained high concentrations of Cl atoms revealing dry and wet activated corrosion of 66.603% and 64.963%, respectively. After being conserved with several steps and NaOH, soapy water and kaffir lime water, inactive corrosion was observed. Based on the results of the analysis performed with XRF, the cannonball does not contain Cl, and the Fe content is 98.99%. The conservation method used in this research is excellent and appropriate to conserve cultural heritage materials, including underwater iron cannonballs.