1. Patches of stable substratum in streams may be important refugia for benthic organisms during scouring floods. Streambed stone stability, packing and embeddedness were assessed within and adjacent to beds of the macrophyte Justicia americana in five Alabama streams. 2. The force needed to dislodge stones and embeddedness was about two times lower outside Justicia beds than within them. Signi...

On May 18, 2022, a Heniochus intermedius (Steindachner, 1893) individual with total length of 140 mm and weight 58.4 g was caught by trap at depth 14 meters, mixed bottom sand stones, in front the beach Banias (N: 35) ° 7. 0.5' 17', E: 35° 54' 14.73). In this work, we document first record Red Sea species (Lesbesian immigrant), 1893), Syrian coast, seventh entire Mediterranean. As result, numbe...

1 Abstract This paper presents a technique for the classiication and analysis of seabed sediments from sidescan sonar image, the origins of which lie in the body of fractal theory. Six seabed types were analysed, namely clay, mud, sand, gravel, stones and rock. These data sets have previously been analysed by several authors who have used techniques based on the power spectrum. The method propo...

BACKGROUND Pulp stones or denticles are frequently found in the dental pulp; there is, however, scarce evidence about this phenomenon. Regardless of the obvious endodontic problem of inhibiting access to the canals and their further treatment, they have not been given great importance. The latest experiences of scientific and practical research, including examinations of dental calcifications a...

In this paper, we propose a system to detect buried disk-shaped landmines from ground penetrating radar (GPR) and forward-looking long wave infrared (FL-LWIR) data. The data is collected from a test area of 500m 2 , which was prepared at the IPA Defence, Ankara, Turkey. This test area was divided into four lanes, each of size 25m length by 4m width and 1m depth. Each lane was first carefully cl...

Several studies have shown that oil recovery significantly increased by low salinity water flooding (LSWF) in sandstones. However, mechanism of oil recovery improvement is still controversial. CO2 that develops buffer in presence of water is expected as a deterrent factor in LSWF efficiency based on mechanism of IFT reduction due to pH uprising. No bright evidence in literature suppo...

Understanding the adsorption behavior of nitrogen heterocyclic compounds (NHCs) on soil minerals underlies more effective design wastewater treatment and soil/groundwater remediation. We investigated quinoline, a representative NHC, quartz sand (using Berea sandstone as model), at 3 < pH 9, in low (0.05 M) high (0.7 ionic strength solutions where NaCl was background electrolyte. Minor clay (kao...

Sixty eight consecutive cases of percutaneous renal surgery, percutaneous nephrolithotripsy (PCNL), were performed on 64 patients (male-41, female-23) at the Subang Jaya Medical Centre from April 1988 to July 1989. All the cases were done as a one stage procedure. Fifty eight stones were large renal or staghorn and ten were ureteric. Thirty cases (41%) were stone free after PCNL alone. Thirty e...