Showing papers by "National University of Malaysia published in 1979"

Female transference and mate choice among Tana River red colobus

Abstract: Red colobus are one of a small number of primate species in which females have been reported to transfer between breeding groups more commonly than males1–3. Several authors have hypothesised that in such species transference may serve to reduce the risk to females of producing offspring of lower fitness through inbreeding1–6. The hypothesis offers no explanation of why females rather than males are responsible for outbreeding in these species, but remains plausible so long as male membership of breeding groups is relatively stable; for once members of one sex have evolved dispersal mechanisms reducing the risk of inbreeding, pressures on the other sex to do likewise will be lowered5. Hence, if both sexes commonly migrate, the hypothesis is weakened. I describe here the membership dynamics of a group of Tana River red colobus, Colobus badius rufomitratus, which provide the first evidence of high rates of membership turnover by both sexes in primates, and speculate that the function of female transference in this case may be related to mate choice and the avoidance of infanticide.

Heavy metal contents in coastal water fishes of West Malaysia

Abstract: This study was aimed at examining the contents of zinc, lead, cadmium, and mercury in fishes caught around the coastal waters of West Malaysia. The areas chosen differ in hinterland industrial development, consisting mainly of ports, shipping, oil refineries, and miscellaneous small manufacturing industries in the west and south and basically non-industrialized areas in the north and east of peninsular Malaysia. It was assumed that if there were any serious pollution resulting from industrial developments, the coastal water fishes and marine lives would also be affected. Since heavy metals like cadmium, lead, and mercury are cumulative in the fish's flesh, the levels of these metals would be good indicators of possible industrial pollution in the areas under study.

Peutz-Jeghers syndrome and its complications. First case report from Malaysia with review of literature.

Abstract: We report for the first time from Malaysia a patient with Peutz-Jeghers syndrome complicated by successive intussusceptions requiring extensive small bowel resection. Our experience is compared with that of other authors by a review of the literature highlighting important points in the diagnosis and management of complications in Peutz-Jeghers syndrome.

Plasma renin activity and hypertension in acute glomerulonephritis.

Abstract: Summary: The relationship between plasma renin activity (PRA), plasma volume (PV) and mean arterial pressure (MAP) in children with acute glomerulonephritis was assessed in two groups of patients between the ages of three to six years. One group with normal blood pressure (13 children) and a group with significantly elevated blood pressure (20 children) were compared with a control group of ten normal children. In patients who developed hypertension (MAP: 113 ± 3 mmHg), the mean PRA was 0±45 ± 0±1 ng/ml/hr, and the mean PV measured in ten of these children was 1526 ± 47±9 ml/M2. In the group of normotensive patients with acute glomerulonephritis (MAP = 79 ± 1±8 mmHg), the mean PRA was 1±6 ± 0±32 ng/ml/hr, the mean PV in four of these patients was 1285±37±6 ml/M2. The children in the control group (MAP = 77± 1±6 mmHg) had a mean PRA of 7±93 ± 0±2 ng/ml/hr and six of these children had a mean PV of 1115 ± 103 ml/M2. The results showed children who developed hypertension had significantly higher PV lower PRA than children with acute glomerulonephritis who were normotensive and the control subjects. A positive correlation was found between MAP and PV and negative correlation between MAP and PRA. There was no significant difference in MAP, PV and PRA between children with acute glomerulonephritis with normal blood pressure and children in the control group.

To ban or not to ban political parties: correlates of turmoil and the problem of "deutschian conflict" in black africa

Abstract: Using a 32-nation sample from Black Africa, a test is made of Deutsch's hypothesis that primordial intergroup conflict is caused by social mobilization when social assimilation lags. A two-stage regression analysis is used to test the hypothesis. Both in terms of bivariate and multivariate regression analysis, it was discovered that indicators of low social assimilation are insignificant to explain primordial inter-group conflict; instead, it was found that the banning of political parties is statistically significant to the correlation. Simply therefore, conflict in SubSahara Africa is really political and bears little relationship to questions of ethnicity and primordialism. However, given the preliminary nature of the data and problems of data accuracy, the results must be regarded as only tentative.

Perkauman dan perpaduan

Abstract: Di samping menganalisa punca-punca yang menimbulkan perasaan perkauman di negeri ini, kertas ini juga cuba membincangkan kesan perasaan perkauman terhadap usaha mewujudkan perpaduan nasional. Perbincangan-perbincangan ini diasaskan kepada penyelidikan yang dilakukan di Labu, Negeri Sembilan dan di Kawasan Majlis Bandaran Melaka. Kajian ini menunjukkan bahawa di antara punca penting yang menimbulkan perasaan perkauman ialah persaingan di antara kumpulan-kumpulan ethnik yang berlainan untuk mendapatkan lebih banyak kuasa politik dan ekonomi.

Portal hypertension due to arteriovenous fistula of the gastroduodenal artery.

Abstract: The record is presented of a patient with severe recurrent bleeding due to portal hypertension. Surgical control of the feeding vessels of a fistulous communication between the gastroduodenal artery and its companion vein arrested the haemorrhage and controlled the portal hypertension.

Possible effects of air pollution and urbanization on visibility in the kuala lumpur- petaling jaya area

Abstract: The only available data from the Airport have been used to examine the effects of air pollution and urbanization on visibility in the Kuala Lumpur-Petaling Jaya area. Although evidence were still inconclusive, there appeared to be a slight trend of deteriorating visibility during the 1966-75 decade particularly in the visibility range of >32.0 km (>20 miles). The growth of urbanization and industrial development within and around Kuala Lumpur-Petaling Jaya coupled with the absence of any form of smoke control measures have probably been the major contributory factors.

Perjuangan dan pemikiran politik dr. burhanuddin al-helmy

Abstract: Dr. Burhanuddin al-Helmy berkecimpung di dalam politik negara ini selama lebih kurang tiga puluh tahun, iaitu dari tahun-tahun 1930an hingga penghujung tahun-tahun 1960an. Di dalam jangkamasa yang agak panjang ini beliau telah menganggotai KMM (Kesatuan Melayu Muda). Memimpin KRIS (Kesatuan Rakyat Indonesia Semenanjung), PKMM (Partai Kebangsaan Melayu Malaya) dan PUTERA-AMCJA, menganjurkan penubuhan Partai Rakyat dan akhirnya memimpin PAS. Dengan mengkaji tulisan-tulisan dan pidato-pidatonya semenjak 1946 serta riwayat hidup beliau, makalah ini mengutarakan bahawa tiga ciri utama pemikiran dan perjuangan politik beliau ialah: kemerdekaan, kebangsaan Melayu dan Islam

Eksport dan pertumbuhan ekonomi malaysia

Abstract: Tujuan kertas ini ialah untuk meninjau kesan eksport dan aliran masuk modal asing ke atas kadar pertumbuhan ekonomi Malaysia dengan berpandukan versi mudah model 'dua-jurang'. Jelaslah dari analisa ini bahawa perniagaan antarabangsa adalah angkubah yang amat penting untuk menerangkan pertumbuhan keluaran negara melalui pengaruhnya ke atas sumber pelaburan dalam negeri dan ke atas barang-barang modal yang diimport. Tetapi kesan aliran masuk modal asing ke atas pertumbuhan output, jika adapun, lebih merupakan 'limpahan' dari kesan eksport.