scholarly journals Geochemical Analysis of Two Samples of Bitumen from Jars Discovered on Muhut and Masirah Islands (Oman)

Separations ◽  
2021 ◽  
Vol 8 (10) ◽  
pp. 182
Author(s):  
Jacques Connan ◽  
Michael H. Engel ◽  
Robert B. Jackson ◽  
Seth Priestman ◽  
Tom Vosmer ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Sri Lanka ◽  
Geochemical Analysis ◽  
Central Coast ◽  
Isotope Data ◽  
Oil Seeps ◽  
Two Samples ◽  
Geochemical Studies ◽  
Southwest Iran

Two samples of bitumen were obtained, one from a torpedo jar (c. 3rd–8th C. AD) from Masirah island and one from a Tunisian jar (c. 18th C. AD) from Muhut island off the central coast of Oman. Steranes and terpanes, as well as isotope data on chromatographic fractions, were used as tools to characterize the bitumen. Comparison of data with those already acquired on bitumen from torpedo jars from Thailand, Iran, Indonesia, Sri Lanka, Saudi Arabia, India, and oil seeps from Iran and Iraq allowed us to conclude that the bitumen originated from different areas of southwest Iran. Those of the Muhut jar were likely from Khuzistan, whereas those from Masirah island appear to have been sourced from Kermanshah. These findings are in keeping with other similar geochemical studies undertaken on bitumen lined vessels from across the region (see more below).

Aonidiella orientalis. [Distribution map].

1978 ◽  
Author(s):  
Keyword(s):  
Saudi Arabia ◽  
Sri Lanka ◽  
North America ◽  
Central America ◽  
Geographical Distribution ◽  
West Indies ◽  
Host Plants ◽  
Distribution Map ◽  
Yellow Scale ◽  
New Distribution

Abstract A new distribution map is provided for Aonidiella orientalis (Newstead) (Chrysomphalus orientalis(Newstead)) (Hemipt., Coccoidea) (Oriental Yellow Scale). Host Plants: Citrus, coconut and date palms, guava, pawpaw. Information is given on the geographical distribution in ASIA, China, India, Iran, Iraq, Malaysia, Nepal, Nicobar, Pakistan, Philippines, Saudi Arabia, Sri Lanka, AFRICA, Ethiopia, Kenya, Somalia, Sudan, Tanzania, AUSTRALIA, Greening, NORTH AMERICA, Mexico, USA, CENTRAL AMERICA and WEST INDIES.

Sarocladium oryzae. [Distribution map].

1990 ◽  
Author(s):  
Keyword(s):  
Saudi Arabia ◽  
Oryza Sativa ◽  
Sri Lanka ◽  
North America ◽  
South America ◽  
Geographical Distribution ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Sarocladium oryzae (Sawada) W. Gams and D. Hawksw. Hosts: Oryza sativa, Bambusa spp. Information is given on the geographical distribution in AFRICA, Burundi, Gambia, Kenya, Madagascar, Nigeria, ASIA, Bangladesh, Brunei, China, Jiangxi, Guangxi, Sichuan, India, Japan, Malaysia, Philippines, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Vietnam, NORTH AMERICA, USA, LA Mexico, SOUTH AMERICA, Brazil.

scholarly journals Stable isotopes and predation marks shed new light on ammonoid habitat depth preferences

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Marcin Machalski ◽  
Krzysztof Owocki ◽  
Zofia Dubicka ◽  
Oksana Malchyk ◽  
Weronika Wierny
Keyword(s):  
Stable Isotopes ◽  
Stable Isotope ◽  
Late Cretaceous ◽  
Late Paleozoic ◽  
Planktic Foraminifera ◽  
Habitat Depth ◽  
Local Populations ◽  
Isotope Data ◽  
Geochemical Studies ◽  
Stable Isotope Data

AbstractAmmonoids are extinct cephalopods with external shells which predominated in many late Paleozoic and Mesozoic marine ecosystems. Stable isotope data from ammonoid shells constitute primary tools for understanding their palaeohabitats. However, in most sedimentary successions globally the aragonitic shells of ammonoids are dissolved during fossilisation process and therefore not available for geochemical studies. We overcome this taphonomic bias by analysing the better preservable calcitic elements of the ammonoid jaws (aptychi). We study moulds and aptychi of two successive members, temporal subspecies in our interpretation, of a scaphitid evolutionary lineage from a Late Cretaceous chalk succession in Poland. In order to reconstruct their habitat depth preferences, we apply the powerful combination of stable isotope data from aptychi and co-occurring benthic and planktic foraminifera with an analysis of predation marks preserved on scaphitid specimens. On this basis we conclude that the populations of the older subspecies led a nektic, and those of the younger subspecies, a nektobenthic lifestyle. The shift in habitat depth preferences took place probably as a response of local populations to the shallowing of the sea. Previous studies largely assumed stable depth preferences for ammonoid species, genera and even higher clades. Our study casts doubts over such generalizations by pointing out that ammonoids could have been more flexible in their depth-related behaviour than anticipated.

scholarly journals Relationships of Astragalus L. in section Sesamei based on morphological criteria and molecular markers

2014 ◽  
Vol 21 (1) ◽  
pp. 1-12
Author(s):  
Sherif M. Sharawy ◽  
Abdelfattah Badr
Keyword(s):  
Saudi Arabia ◽  
Molecular Markers ◽  
Morphological Variation ◽  
The Other ◽  
Molecular Polymorphism ◽  
Morphological Criteria ◽  
Two Samples ◽  
Plant Taxon ◽  
Issr Fingerprinting ◽  
Rapd And Issr

The relationships among five species and two varieties of Astragalus L. in the section Sesamei (Fabaceae) from Egypt and Saudi Arabia have been reassessed based on morphological variation and molecular polymorphism as revealed by RAPD and ISSR fingerprinting. The analysis of morphological variation delimited the examined taxa into two groups; one comprising samples representing A. sinaicus, A. asterias and A. schimperi, and the other is comprised of two samples of A. stella and six samples representing A. tribuloides. The grouping of A. asterias and A. schimperi based on morphological criteria indicates affinities between them that were not reflected in their previous treatments. Both morphological criteria and molecular markers indicated considerable distance between the samples of A. stella and A. tribuloides. The multiform nature of A. tribuloides is confirmed as A. tribuloides var. mareoticus is clearly differentiated from the type A. tribuloides and A. tribuloides var. minutus.DOI: http://dx.doi.org/10.3329/bjpt.v21i1.19250Bangladesh J. Plant Taxon. 21(1): 1-12, 2014 (June)

scholarly journals Assessment of some trace heavy metals and radioactivity concentration in drinking water of Saudi Arabia

2017 ◽  
pp. 4838-4845
Author(s):  
Rafat M. Amin
Keyword(s):  
Heavy Metals ◽  
Trace Elements ◽  
Drinking Water ◽  
Saudi Arabia ◽  
Radioactivity Concentration ◽  
Gross Beta ◽  
Gross Alpha ◽  
Two Samples ◽  
Preliminary Study ◽  
Water Radioactivity

Concentration of trace elements and natural gross radioactivity were measured in the drinking water in Jizan region (Saudi Arabia). A preliminary study on trace elements (Zn, Fe, Mn, Ni, Cu, Cr, Co, Se, Sr, V, Ti, Mo, Hg, Cd, Ba, As, Al and Pb) concentrations and natural radioactivity related to gross-α and gross-β radiations in the drinking water were determined. The obtained results showed that, in general, the trace elements concentrations in water did not exceed WHO [1], and GSO [2] guidelines. Generally, heavy metals concentration of the drinking water were found to be in the sequence of Sr > Ti > Fe > Al > Zn > Ba > As > Cu > Mo > Ni > Cr > Co > Se >Hg > Mn, respectively. The results of this study indicated that a general absence of serious pollution in the drinking water used in this region. The results obtained from the radioactivity determination indicate that the drinking water radioactivity concentration of gross-α and gross-β were ranging from 0.06±0.001 to 0.45±0.03 Bq/l and from 0.05±0.006 to 2.95±0.23 Bq/l, respectively. The gross alpha values were found to fall below the GSO and WHO recommended MCL of 0.5 Bq/l while the gross beta values in two samples only exceeds the MCL value of 1 Bq/l, respectively.

Papilio demoleus. [Distribution map].

1979 ◽  
Author(s):  
Keyword(s):  
Saudi Arabia ◽  
Hong Kong ◽  
Sri Lanka ◽  
Papua New Guinea ◽  
Host Plants ◽  
Pacific Islands ◽  
Distribution Map ◽  
Lord Howe Island ◽  
Papilio Demoleus ◽  
New Distribution

Abstract A new distribution map is provided for Papilio demoleus L. (Lep., Papilionidae) (Citrus Swallow Tail, Lemon Butterfly). Host Plants: Citrus, Zizyphus, bael fruit. Information is given on the geographical distribution in ASIA, Bangladesh, Bhutan, Burma, Cambodia, China, Hong Kong, India, Indonesia, Iran, Iraq, Jammu & Kashmir, Laos, Malaysia, Nepal, Pakistan, Saudi Arabia, Sikkim, Singapore, Sri Lanka, Taiwan, Thailand, Vietnam, AUSTRALASIA and PACIFIC ISLANDS, Australia, Lord Howe Island, Papua New Guinea.

Do risk factors increase measurement of hepatitis B, C signs and HIV-AIDS among middle-aged and older IDUs in southwest Iran?

2019 ◽  
Vol 19 (3) ◽  
pp. 230-238
Author(s):  
Abdolrahim Asadollahi ◽  
Abdolkarim Najafi
Keyword(s):  
Drug Use ◽  
Hepatitis B ◽  
Drug Users ◽  
Injecting Drug Use ◽  
Serum Samples ◽  
Content Type ◽  
Two Samples ◽  
Southwest Iran ◽  
Practical Implications ◽  
Hiv Aids

Purpose Injecting drug use addiction is a main factor in hepatitis B, C infection and HIV–AIDS infection. The purpose of this paper is to measure seroprevalence of hepatitis B, C virus and HIV–AIDS amongst injecting drug users (IDUs) and its influencing factors. Design/methodology/approach The cross-sectional method was used in mid-2017 in Ahwaz city, southwest Iran. In total, 133 IDUs, aged 29–71 years (mean age=48.21 ± 10.4), were chosen from Aria addiction treatment centre. The data were collected on demographic and behavioural characteristics. In addition, serum samples were screened for those diseases. Findings In a total of 131 IDUs, 2 (1.5 per cent) were HIV+, 16 (11.7 per cent) HCV+ and 8 (6.1 per cent) HBV+. There was a significant correlation between diseases and IDU. Results of multiple regression stated that IDU was a more predicting variable as β=0.76 and the model was able to predict 74.1 per cent of the variance, F (3, 35)=12.42, ρ<0.001, R2=0.741, OR=3.01, 95% CI [1.44, 3.83]. The synchronised pairwise effect of age, imprisonment and IDU with GLM analysis was significant, F (2, 114)=20.433, ρ<0.000, η HCV + 2 = 0.609 , η HBV + 2 = 0.616 , and η HCV + 2 = 0.612 , λWilks’=0.056. The infection rate among IDUs was significant and the most important risk factor for these infections has been intravenous drug use, together with age of misusing and imprisonment. Research limitations/implications The non-cooperation of two samples, lack of participation of three addiction rehabilitation centres in Ahwaz city, the end of cooperation in the first two months of the implementation of the plan, and the lack of consistency of the three serum samples in the cases (two cases) were limitations of the study. Practical implications Based on the results, the following suggestions could be presented: establishing “Intervention Clubs” for treatment in the peripheral urban areas for the participation of women drug users – the responsible organisation is Cultural and Social Deputy of Ahwaz Municipality Organisation. Integration of “Small Self-caring Groups” in Sepidar Women’s Penitentiary in the East Ahwaz region – the responsible organisation is Khuzistan Province Prisons Organisation (the southwestern Iranian prisons authority); constructing “Community-based Committees” to increase the level of social intervention – the responsible organisation is the Iran Drug Control Headquarters at Iranian Presidential Office; screening of injecting drug use in the populations at risk, especially girls and women in marginalised areas – the responsible organisation is Deputy Director of Prevention and Treatment of Addiction in the Iran Welfare and Rehabilitation Organisation; establishing an “Patient Treatment Center” in high-risk areas along with directing drug users and supervising the relevant authorities – the responsible organisation is Deputy Police Commander on Social Assistance; providing education to families involved with addiction in the “Neighborhood Parks” – the responsible organisation is Deputy for Health Affairs. Social implications They are mixed with practical implications as well. Originality/value The comprehensive harm reduction plan and prison-related issues of IDUs with shared syringe along with the pairwise age and imprisonment need to consider the above factors.

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