No abstract

The high level of rice production in Indonesia creates a large amount of waste material as the husks are removed from the edible portion of the rice grains. Grain milling plants—located in almost every region of Indonesia—cause environmental pollution from the incineration of the unused husks. This study investigated the viability of reducing pollution by making effective use of the husks. Our goal was to determine the suitability of rice husk charcoal as a substitute for sand in the manufacturing of concrete. Testing included the weight of both solid and loose components, absorption, and strength. Rice husk was burned to form the charcoal. Cube-shaped concrete test objects were prepared with a size of 15cm x 15cm (up to 15 pieces) with a predicted compressive strength of 25 MPa. The mix design used Indonesian standard SNI 03-2834-2000. Our overall conclusion was positive. We obtained the following test results for the charcoal: weight of 0.581, density of solid contents 258.21 kg/m³, density of the loose contents 247.37 kg/m³, and absorption of 0.51. The compressive strength test of the concrete at 28 days yielded a strong press of 21.7 MPa; at 56 days this was 27.4 MPa; and at 90 days, 31.8 MPa. The Rat content was 2.150 kg/m³ when tested at 56 days and 90 days. Compressive concrete strength exceeded the projected value of 25 MPa, achieving a range of 27.4–31.8 MPa. The rice husk charcoal could be used as an effective substitute for sand and caused heavy concrete to become lighter.

Nurses working at the Mental Hospital are different from other section nurses, there are loads of nurses possessed anxieties when they treat mental patients and it disrupts their performance. Whereas, the nurse performance has a vital and strategic value that depicts the quality of service in the hospital. Baring that in mind, this study aims to determine the relationship of anxiety of nurses toward their performances of treating patients at Atma Husada Mahakam Mental Hospital, Samarinda. Using the Lameshow formula, this study obtains a sample size of 96 people. The sampling technique used is Stratified Random Sampling. This study data retrieval is in September - October 2017. The questionnaire used is The Six Dimension Scale of Nursing Performance (SDNS and Hamilton Anxiety Rating Scale (HAM-A). Bivariate analysis conducted uses the Pearson Product Moment with a p-value of 0,000 with the correlation value of anxiety on nurse performance in the frequency of nurses 'activities r = 0.41 and the quality of nurses' activities r = 0.54 which means that it correlates strongly. There must be some effort to minimize anxiety mental nurses by using a new innovation and training to increase nurses knowledge, abilities and skills so it can improve performance of nurses in carrying out nursing care and action.

Families who reside in the surrounding flood-prone areas require flood preparedness to undertake preparedness so that family members do not create new problems such as anxiety. This study aims to determine the relationship of knowledge with experience in dealing with the level of anxiety of household head anxiety. This research is a cross-sectional descriptive correlation study and the sample used in this study is 225 households. The results of the study using the Anova test showed that the knowledge and experience of dealing with floods were related to the anxiety of household heads in disaster-prone areas (p = 0.001; α = 0.05). Multivariate of results were found that the most related factor was an experience. This study recommends that the family knowledge needs to be increased through simulation training to deal with floods by involving the Regional Management Agency, the local government and the Public Health Center

As the progress of using materials for making concrete is growing, a lot of research has been done to make concrete with a variety of materials to get concrete performing well. The compressive strength and split concrete are influenced by what materials are used. This study conducted an experiment to make fibrous concrete using a mixture of fiberglass material type Chopped Strand Mat (CSM), CSM was cut to a size of 1 cm x 4 cm then CSM was described by pulling CSM from the webbing. The cylindrical specimens measuring 150 mm x 300 mm, the compressive strength of the plan 20 Mpa with 4 kinds of mixed variations of 0 %, 0.25 %, 0.5 %, and 0.75 % of the weight of cement used. Compressive and split strength testing of concrete aged 7, 14, and 28 days. The results of slump test results showed that the greater the percentage of Fiberglass the lower the slump produced. The compressive strength test results obtained 0 % at the age of 28 days obtained compressive strength of 20.2 MPa, while the highest addition of fiberglass compressive strength at 28 days the addition of fiberglass by 0.25 % 24.6 MPa. The highest tensile strength at 0.75 % fiber addition was 3.9 MPa, and the maximum flexural strength at 0.75 % fiber addition was 2.889 MPa. From the results of this study it was concluded that with the addition of 0.25 % fiberglass it was found to be strong the highest compressive strength is 24.6 MPa and the splitting strength of 3.9 MPa is produced from the addition of 0.75 % fiber, and the flexural strength of 2.889 MPa is produced from the addition of 0.075 % fiber. with the addition of a certain percentage of fiberglass can add compressive strength, tensile strength and flexural strength in concrete.