Water Quality Monitoring of Unhas Lake Water

The Hasanuddin University has two lakes / site that form a reservoir ecosystem network of water potential as a buffer zone soil water conservation both inside the campus and the region around the Unhas campus. Therefore, Unhas Lake water resources must be protected in order to get clear and healthy water for humans and other living things and should be monitored for water quality regularly and continuously. The research method is observational method with a descriptive study design. The water samples were taken from Unhas Lake which is divided into five sampling points determined by purposive sampling method. Based on physical parameters test results of five sampling points obtained, Unhas Lake Water temperatures were quite stable, ranged between 27,2°C-28,2°C. TDS test results obtained that TDS levels of Unhas Lake Water ranged from 129 mg/l-140 mg/l and were under water quality standard for Class 1 that requires TDS level maximum 1000 mg/l. Meanwhile, TSS test results that meet class I quality standard was station 2, 3, 4, ranged between 10 mg/l-26 mg/l, while stations (points) that did not meet the quality standard for Class 1 were station 1 and 5 i. e 60 mg/l and 90 mg/l, while the maximum permissible level was 50 mg/l. Based on chemical parameters test results, quality of Unhas Lake Water did not meet the quality standard criteria for Class 1 listed in Government Regulation Number 82 Year 2001 for parameters ammonia, BOD5, COD, DO, and nitrite. Meanwhile, the chemical parameters for class 1 quality standard that meet are iron, fluoride, nitrate, and sulfate. Based on microbiological parameters test results of five sampling points showed that Fecal coliform bacteria level at stations (points) 1, 2, 3, 4, and 5 were 295 MPN/100 ml, 4352 MPN/100 ml, 17329 MPN/100 ml, 142 MPN/100 ml, and 30 MPN/100 ml, Fecal coliform bacteria with the highest number was at station (point) 3 and the lowest was at station (point) 5. The number of total coliform bacteria at stations 1, 2, 3, 4, and 5 were 24196 MPN/100 ml, > 24196 MPN/100 ml, > 24196 MPN/100 ml, 10462 MPN/100 ml, and 10462 MPN/100 ml, total coliform bacteria with the highest number were at station (point) 2 and 3 and the lowest were at station (point) 4 and 5

Implementasi Fungsi Rasional (X2 + 3x − 5)/(5x + 2) Sebagai Pembangkit Bilangan Acak

Penelitian ini menguji fungsi ( x 2 + 3 x − 5) /(5 x + 2) untuk dijadikan kunci pembangkit bilangan acak Kriptografi Block Cipher digunakan pada penelitian ini dengan menggunakan Metode Fungsi Rasional Pengujian selanjutnya dilakukan dengan proses run test, Mono Bit test, dan Block Bit test untuk melihat keacakan dari fungsi rasional yang sudah didapat. Fungsi kemudian dilakukan pengujian korelasi antara chiperteks dan kunci yang memberikan hasil yang mendekati 0 sehingga plainteks dan chiperteks bisa dikatakan tidak berhubungan. Keacakan yang dihasilkan oleh fungsi dapat digunakan sebagai pembangkit bilangan acak. Berdasarkan penelitian yang dilakukan fungsi iterasi ( x 2 + 3 x − 5) /(5 x + 2) memberikan grafik yang acak dari bilangan satu sampai dengan bilangan ke lima dengan pengujian korelasi yang mendekati 0 sehingga fungsi ini dapat digunakan sebagai alternative dalam menghasilkan kunci pembangkit bilangan acak.This study tested the function ( x 2 + 3 x − 5) /(5 x + 2) to be used as a random number generator key. Block Cipher cryptography was used in this study using the Rational Function Method. The next test was carried out by the run test process, Mono Bit test, and Block Bit test to see the randomness of the obtained rational function. The function is then tested for the correlation between the ciphertext and the key which gives a result close to 0 so that the plaintext and ciphertext can be said to be unrelated. The randomness generated by the function can be used as a random number generator. Based on research conducted the iteration function ( x 2 + 3 x − 5) /(5 x + 2) provides a random graph from the number one to the fifth number with a correlation test close to 0 so that this function can be used as an alternative in generating random number generator ke

Circadian Rhythms in Urinary Functions: Possible Roles of Circadian Clocks?

Circadian clocks are the endogenous oscillators that harmonize a variety of physiological processes within the body. Although many urinary functions exhibit clear daily or circadian variation in diurnal humans and nocturnal rodents, the precise mechanisms of these variations are as yet unclear. In this review, we briefly introduce circadian clocks and their organization in mammals. We then summarize known daily or circadian variations in urinary function. Importantly, recent findings by others as well as results obtained by us suggest an active role of circadian clock genes in various urinary functions. Finally, we discuss possible research avenues for the circadian control of urinary function

Fetal lung maturity assessment by a modified A650 determination

Peer Reviewe

Simulation Model Pattern Distribution Sediment at Ambon Bay, Indonesia

The sedimentation occurring in the outer Ambon bay as a result of the effluent from Way Ruhu river causes the reduction the mouth of the outer Ambon Bay, so that it influences the current movement pattern and sediment distribution. This research aimed at analyzing the current movement pattern and sediment distribution pattern in the outer Ambon bay using two scenarios: with the reclamation and without reclamation. The research used the numerical model of MIKE 21DHI with modules of the hydrodynamic and mud transport. The research result indicates that the simulation current velocity with the absence of reclamation ranged from 0.0-0.4 m/s, while with the presence of the reclamation, the current velocity is slightly higher that is between 0.0 - 0.6 m/s the various velocity patterns. The sediment distribution pattern in the outer Ambon bay as the result of the effluent from the way Ruhu river follows the current movement. If the conditions leading to the tide and the highest tide, the sediment going out from way Ruhu river is pushed into the bay and vice versa, when the condition leading to the recede and lowest recede, the sediment concentration is pulled out from the bay. The suspended sediment concentration is between 0.002 kg/m3 - 0.030 kg/m3 with the various patterns. The suspended sediment concentration to the condition without reclamation is more collecting if compared with the suspended sediment concentration by the presence of the distributing reclamation because of current velocity effect