Rabu, 22 Oktober 2008

Abstrak artikel Vol 1 No 2 Januari 2008

UJI COBA BIOINSEKTISIDA TERHADAP LARVA Anopheles spp.
DI HABITAT SUNGAI PADA MUSIM KEMARAU

Yamtana , Damar Tri Boewono , Soeyoko

Abstract

The objective of the study was to determine the differences of the killing power effect amongst three type of bioinsecticides on Anopheles spp larvae living at puddles on river habitation during dry season. The type of the study was quasi experimental, and the treatment was aimed at puddles which act as breeding places for Anopheles spp on three river habitation in Kokap Sub-District, Kulon Progo Regency, Yogyakarta Province. The treatment were conducted by dripping a dose of 1 liter/ha liquid formulation of B. thuringiensis H-14 bioinsecticides to each of 15 puddles at Progo River; spreading a dose of 500 mg/ha granule formulation of B. thuringiensis bioinsecticides H-14 to each of 15 puddles at Tegiri River; and spreading a dose of 500 mg/ha granule formulation of B. sphaericus H-5a5b to each of 15 puddles at Geseng River. The control groups for each treatment were five puddles at the same river and were treated by blank formulation. Data was analyzed using Anova test version 10.0 for windows, and was followed by comparing only those in the treatment group using Duncan test. Liquid formulation of B. thuringiensis H-14, granule formulation of B. thuringiensis H-14, and granule formulation of B. sphaericus H-5a5b affected the decrease of Anopheles spp larvae density for more than 70% for 7 days, 7 days, and 14 days respectively. As Anova test showed a very significant differences (p<0.01), ), it can be concluded that there were significant differences of the killing power effect amongst the three type of bioinsecticides on the density of Anopheles spp larvae living at puddles on river habitation during dry season.

Keywords : Bioinsecticides, Anopheles spp, River Habitation, Dry Season

METODA PENENTUAN NITRIT TRACE DI LINGKUNGAN PERAIRAN SEBAGAI KOMPLEKS 4-(4-NITROBENZENAZO)-1-AMINONAFTALEN SECARA EKSTRAKSI N-AMIL ALKOHOL-SPEKTROFOTOMETRI

Choirul Amri

Abstract

A study of extraction-spectrophotometric method for the determination of trace nitrite as 4-(4-nitrobenzenazo)-1-aminonaphthalene complex using n-amylalcohol as organic solvents has been conducted. Results of the study showed that extraction-spectrophotometric determination of nitrite using n-amylalcohol had high sensitivity and low limit of detection. This method produced linear concentration of 0.000 - 0.054 mg/l NO2—N; detection limit of 2.09x10-4 mg/l NO2—N; and sensitivity of 34.514 ± 0.398 absorbance unit per mg/l of NO2--N.

Keywords : Nitrite; 4-(4-Nitrobenzenazo)-1-aminonaphthalene; n-Amil alcohol;
Extraction-Spectrophotometry

PENGARUH PENGGUNAAN GENTENG KACA
TERHADAP ANGKA KUMAN UDARA RUANG TIDUR
DI DUSUN KARANG DUREN, KALITIRTO, BERBAH, SLEMAN
YOGYAKARTA

Oka Prastyo Wijanarko, Sigid Sudaryanto, Y. B. Kamat Kartono

Abstract

One of the important rooms in a house is bedroom where people can use it for taking a rest or sleeping in a standard of eight hours/day. Based from a preliminary observation held at two bedrooms in Kalitirto Village, the number of microrganisms measured in the ambient air were 3592 colonies/m3 and 3204 colonies/m3 respectively. These numbers did not fulfill the maximum number of microrganisms permitted for ambient air in a room i.e 700 colony/m3. Those high numbers of air microorganisms can affect household’s members’ health and furthermore can lead to the emerge of some diseases, such as Tuberculosis and Acute Respiratory Infection. Because of this case, the study was aimed to decrase the numbers of the air microrganisms by installing glass roofs. The glass roofs were considered as effective media through which ultraviolet in sun rays can enter the rooms, and useful for reducing the number of the existing air microorganisms. The research was a true experimental study which used pre-test and post-test design. The research was conducted in 15 bedrooms, from which three groups of treatment consisted of five bedrooms were set. The sample bedrooms were installed by one, two and three glass roofs respectively. The data was analysed descriptively; and analytically by using paired t-test with sigificancy level at 0,05. The purpose of the research was to understand the influence of glass roofs installation on the number of microorganisms in ambient air of bedrooms, by comparing those numbers between treatment and control groups. Results of the research showed that the p-values generated for the decrease of the microrganisms numbers between the pre-test and post-test were: 0,003 (one glass roofs installation); 0,006 (two glass roofs installation); and 0,002 (three glass roofs installation). Therefore, it can be concluded that the installation of glass roofs on bedrooms affected the decrease of air microorganisms number.

Keywords : Glass Roof, Air Microorganisms, Bedrooms Air-Quality

PEMANFAATAN PENGOLAHAN METODA CIDAT
(CIRCULAIR DOUBLE ANAEROBIC TANKS)
TERHADAP KADAR COD, TSS, AMMONIA
LIMBAH CAIR INDUSTRI PEMOTONGAN AYAM

Bambang Suwerda, Heru Subaris Kasjono, Y. B. Kamat Kartono

Abstract

CIDAT method was a waste water treatment plant which was developed to overcome waste water originated from chicken abattoir industry. The method used community-based technology approach, and was developed in Klaci II Village, Margoluwih, Seyegan, Sleman Regency.
The research was aimed to study the influence of CIDAT toward the decrease of COD, TSS, and Ammonia concentration in the waste water. The study used “Pre-Test Post-Test With Control Group Design”; and the waste water sampling method was grab sampling of which three repetitions for both the treatment and control groups were conducted. As control group, the Terban chicken waste water installation was chosen. The results showed that the average decrease of COD concentration were from 1855 mg/l to 58,37 mg/l, or 98,85%; TSS: from 1597,5 mg/l to 36,5 mg/l or 97,72%; and Ammonia: from 3,16 mg/l to 0,74 mg/l or 75,81%. This results had fulfilled the corresponding regulation. The study recommend that CIDAT technology can be used to minimize the decrease in environment quality caused by the waste water, and subsequently could protect the health of people living nearby the industry.

Keywords : Waste Water Treatment, Chicken Abattoir, Anaerobic Processing,
Chemical Oxygen Demand, Total Suspended Solid, Ammonia

UJI KUALITAS AIR MINERAL KEMASAN DAN PEMURNIAN AIR
MENGGUNAKAN LEMPUNG AKTIF

Narto, Siti Hani Istiqomah, Nursiti

Abstract

Thirty seven samples of bottled mineral water of 15 existing brands from Yogyakarta’s surrounding areas had been analysed. The analysis used Atomic Absorption Spectrophotometric and Spectrometric methods, and were aimed to examine metal and anion contents.
In general, the results of the analysis showed that mineral content in bottled water samples has fulfilled the Indonesian Industry Standard. However, still few of them disconformed the contents stated on their corresponding labels. In order to produce high quality bottled water, the usefulness of activated clay as ion exchange resin was subsequently tested. The test showed that activated clay can be used as purifier media for processing river water or industrial waste water to generate mineral drinking water.

Keywords : Bottled Mineral Water, Activated Clay, Ion Exchange Resin

LITERATURE REVIEW :
STUDI TENTANG DENGUE MODELLING,
APLIKASINYA UNTUK MEMPERKUAT DENGUE SURVEILANS

Agus Kharmayana Rubaya

Abstract

Dengue is one of major public health problems in Indonesia. However, health surveillance as one of important activies for controlling this disease still needs improvement, particularly in predicting the excessing incidence amongst population. Since many factors are associated with the spreading of dengue, it is important to incorporate those factors in the existing dengue surveillance to enhance its predictability. This literature review was aimed to provide scientific consideration whether any dengue model developed in other countries is applicable for strengthening dengue surveillance. The review was conducted by searching related scientific articles in health journal databases available from University of Melbourne’s electronic library. The criteria to critically appraise the models were: the adequacy of sample size; the appropriateness and adequacy of both the measurements and the sources of dengue outcomes and predictors data; model’s validation; and potential bias. Nineteen models were identified of which each model has heir own limitation and potential bias. Therefore, no model could be directly implemented to improve the existing dengue surveillance in Indonesia. Nevertheless, aspects and methods in constructing some models, such as the importance of incorporating various predictors; the importance of determining area or community risk level; and the usefulness of employing Geographical Information System (GIS) technology could be considered. Subsequently, this review recommends that further studies for developing region-based prediction models should be proposed and conducted in the future.

Keywords : Dengue, Dengue Models, Dengue Surveillance, Incidence Prediction

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