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a.nua. dose ra.e for Qena.governora.e popula.ion due to consume the a.ima. products

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Nuclea. Science a.d Techniques 2010年第2期21卷 76-79页

作者： S. Ha.b K. Sa.a.el Din a. abbady Na.wa.Sa.d Physics Depa.tment Faculty of Science South Valley University Qena 83523 Egypt

In this work, the na.ura. ra.ionuclide concentra.ions of the 226Ra. 228Ra. 232Th a.d 40K were estima.ed from sa.ples of ca.tle a.d poultry fodder, South Va.ley University fa.ms a.d Qena.Governora.e fa.m, Qena. Upper Egypt. The ra.ionuclide concentra.ions a.d a.nua. consumption ra.e of twenty-nine a.ima. fodders were a.a.yzed using low-level γ-spectrometer, including a.mixture fodder, sila.e, ha., rice stra., a.d poultry fodder. The irra.ia.ion risk of huma. hea.th wa. a.sessed due to indirect ingestion of the beef, milk, poultry a.d egg, the a.nua. effective dose of the ra.ionuclides for the loca. consumer wa. 2.7, 14, 0.1, a.d 0.14 μSv·y–1, respectively.

关键词：消费者动物产品天然放射性核素剂量率人口家禽饲料动物饲料混合饲料

Ra.ioa.tivity Levels a.d Soil-to-Pla.t Tra.sfer Fa.tor of Na.ura. Ra.ionuclides from Protectora.e a.ea.in a.wa., Egypt

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World Journa. of Nuclea. Science a.d Technology 2014年第1期4卷 7-15页

作者： S. Ha.b a. H. El-Ka.el a. I. a.d El-Ma.eed a. abbady W. Ra.hed Physics Depa.tment Faculty of Science Assiut University Assiut Egypt Physics Depa.tment Faculty of Science South Valley University Qena Egypt

The a.m of this study is to determine the tra.sfer fa.tor soil-to-pla.t a.d to a.sess the concentra.ion level of na.ura. a.d a.tificia. ra.ionuclide (238U, 226Ra. 228Ra. 232Th, 40K a.d 137Cs) in sa.ples from Sa.uga.a.d Gha.a. Protectora.e a.ea.in a.wa., Egypt, by using High Pure Germa.ium detector (HPGe) Environmenta. Ra.ioa.tivity Mea.urements La.rota.y in fa.ulty of science Qena. Reported va.ues for na.ura. ra.ionuclides ra.ged from 8.81 ± 0.64 to 28.88 ± 2.10, from 6.98 ± 0.51 to 26.01 ± 1.89, from 12.29 ± 0.89 to 33.32 ± 2.43, from 12.53 ± 0.91 to 32.81 ± 2.39 a.d from 383.90 ± 27.95 to 711.98 ± 51.83 ***-1 for 238U, 226Ra. 228Ra. 232Th a.d 40K, respectively. 137Cs a.tivity concentra.ion wa. found to be in the ra.ge from 0.36 ± 0.03 to 9.73 ± 0.71 ***-1 a.d wa. ca.cula.ed through tra.sfer fa.tor TF reported in this a.ticle.

关键词： Na.ura. Ra.ionuclides Tra.sfer Fa.tor Pla.t Soil Protectora.e a.ea

Level of na.ura. ra.ionuclides in foodstuffs a.d resulta.t a.nua. ingestion ra.ia.ion dose

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Nuclea. Science a.d Techniques 2006年第5期17卷 297-300页

作者： a.abbady Physics Depa.tment Faculty of Science QenaSouth Valley University Egypt

The na.ura. ra.ioa.tivities in three ma.or groups of foodstuff widely consumed in Upper Egypt were de- termined. The specific a.tivities of 226Ra. 232Th, a.d 40K in cerea.s, leguminosa., a.d flour were mea.ured using γ-ra. spectroscopy. a.other group of ha., wa.er, a.d soil sa.ples from the sa.e loca.ion were a.so a.a.yzed. Ha. sa.ples were found to conta.n the highest ra.ioa.tivity concentra.ion a.ong a.l the sa.ples tha. were investiga.ed. This in- crement could be due to the high wa.er content in the shoots which tends to a.cumula.e soluble ra.ionuclides. The a.era.e ca.cula.ed concentra.ions of soil sa.ples in the present study exhibits the lowest va.ues with respect to those from different countries. In the ca.e of wa.er sa.ples, the a.era.e a.tivities of both 232Th a.d 40K were simila. to those for soil while 226Ra.wa. twice tha. of wa.er sa.ple. The a.nua. ingestion dose from ea.h ra.ionuclide wa. ca.- cula.ed. The computed a.nua. dose owing to da.ly inta.e of ra.ium, thorium, a.d pota.sium via.whea. flour, lentils, a.d bea. in the present study (214.8 μSv) is ten times lower tha. the globa. a.era.e a.nua. ra.ia.ion dose (2400 μSv) from the na.ura. ra.ia.ion sources a. proposed by UNSCEa.. The obta.ned results show tha. the dose va.ues a.e quite low a.d ca.ry insignifica.t ra.ia.ion dose to the public.

关键词：天然放射性核素放射能年剂量粮食辐射剂量

Na.ura. ra.-emitting ra.ionuclides in Egyptia. cement

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Nuclea. Science a.d Techniques 2005年第6期16卷 376-380页

作者： a.M.EL-a.a.I a.abbady a.H. EL-Ka.EL a. NOSIER a. MOUSTa.A Physics Depta.tment Faculty of Science Qena South Valley University Egypt Physics Depta.tment Faculty of Science Assiut University Egypt Physics Depta.tment Faculty of Science El-Azhar University Egypt

Sa.ples of cement ma.ufa.tured in Egypt a.d the ra. ma.eria.s ha.e been a.a.yzed usingga.ma.spectroscopy, in order to determine the concentra.ion of na.ura. ra.ionuclides a.d a.socia.ed ra.iologica.ha.a.d. The mea. of specific a.tivity due to ra.ionuclides of 226 Ra. 232 Th a.d 40 K wa. found to be (20±4), (11± 2),(320±18) (gypsum), (41±8), (27±5), (410±27) (cla.), (58±11), (18±3), (321±20) (iron ore) a.d (37.6±6), (11.8±3),(178.6±15) Bq?kg -1 (Portla.d cement), respectively. 40 K concentra.ion could not be detected in sla., limestone, sul-pha.eresista.t cement (S.R.C.), clinker a.d white cement, while the mea. specific a.tivities of 226 Ra.a.d 232 Th a.e(239±16), (48.7±7); (31.5±5), (10±2); (47±7), (20±5); (23±5), (10.4±3) a.d (23±5), (11±3) Bq?kg -1 , respectively. Thea.tivities (concentra.ions) a.e in the sa.e ra.ge a. the da.a.relea.ed in other countries. The ca.cula.ed ra.ia.ion ha.-a.dpa.a.eters for a.l the sa.ples a.e still lower tha. the a.cepta.le va.ues in Egypt a.d other countries.

关键词： γ射线放射性核埃及伽马射线

Prepa.a.ion a.d Rea.tions of 2-Methyl-7-（3-methyl-5-oxo-1- phenyl-2-pyra.olin-4-yl）-5-a.ylthia.olo[3,2-a.- pyrimido[4,5-d]oxa.in-4（5H）-one

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Chinese Journa. of Chemistry 2011年第7期29卷 1473-1482页

作者： Youssef, Moha.ed Sa.a. K. abbady, Moha.ed S. a.med, Ra.a. a. Oma., a.med a. Chemistry Depa.tment Faculty of Science Assiut University Assiut 71516 Egypt

Ethyl 7-a.ino-3-（3-methyl-5-oxo- 1-phenyl-2-pyra.olin-4-yl）-5-a.yl-5H-thia.olo[3,2-a.pyrimidine-6-ca.boxy- la.e wa. hydrolyzed with a. etha.olic sodium hydroxide a.d the sodium sa.t thus formed underwent cycliza.ion with a.etic a.hydride to a.ford 2-methyl-7-（3-methyl-5-oxo-l-phenyl-2-pyra.olin-4-yl）-5-a.ylthia.olo[3,2-a.- pyrimido[4,5-d]oxa.in-4（SH）-one. This compound wa. tra.sformed to rela.ed heterocyclic systems via.its rea.tion with va.ious rea.ents. The biologica. a.tivity of the prepa.ed compounds wa. tested a.a.nst Gra. positive a.d Gra. nega.ive ba.teria.a. well a. yea.t-like a.d fila.entous fungi. They revea.ed in some ca.es excellent biocida. properties.

关键词： thia.olopyrimidooxa.inone thia.olopyrimidopyrimidines a.timicrobia. a.tivity

Spa.ia. hotspot detection using polygon propa.a.ion

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Interna.iona. Journa. of Digita. Ea.th 2019年第7期12卷 825-842页

作者： Sa.ya.Ka.ra.a.da.Jia. Chen Sha.ba. abbady Center for Visua. a.d Decision Informa.ics(CVDI) University of Louisiana at LafayetteLafayetteLAUSA Informa.ics Resea.ch Institute(IRI) University of Louisiana at LafayetteLafayetteLAUSA Depa.tment of Geogra.hy University of North AlabamaFlorenceALUSA Center for a.va.ced Computer Studies(Ca.S) University of Louisiana at LafayetteLafayetteLafayetteLAUSA

Spa.ia. sca. sta.istics is one of the most importa.t models in order to detect high a.tivity or hotspots in rea. world a.plica.ions such a. epidemiology,public hea.th,a.tronomy a.d criminology a.plica.ions on geogra.hic *** sca. sta.istic uses regula. sha.es like circles to detect a.ea. of high a.tivity;the sa.e model wa. extended to eclipses to improve the *** recent works identify irregula. sha.ed hotspots for da.a.with geogra.hica. bounda.ies,where informa.ion a.out popula.ion within the geogra.hica. bounda.ies is *** the introduction of better ma.ping technology,ma.ping individua. ca.es to la.itude a.d longitude beca.e ea.ier compa.ed to a.grega.ed da.a.for which the previous models were *** propose a. a.proa.h of spa.ia. hotspot detection for point da.a.set with no geogra.hica. bounda.y *** a.gorithm detects hotspots a. a.polygon ma.e up of a.set of tria.gles tha. a.e computed by a.Polygon Propa.a.ion *** time complexity of the a.gorithm is non-linea. to the number of observa.ions,which does not sca.e well for la.ger *** improve the model,we a.so introduce a.Ma.Reduce version of our a.gorithm to identify hotspots for la.ger da.a.ets.

关键词： Spa.ia. clustering Ma.Reduce hotspot detection polygon propa.a.ion

Estima.ion of ra.ia.ion ha.a.d indices from na.ura. ra.ioa.tivity of some rocks

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Nuclea. Science a.d Techniques 2006年第2期17卷 118-122页

作者： a.abbady N.K.a.MED a.M.EL-a.a.I R.MICHEL a.H.EL-Ka.EL a.G.E.abbady Physics Depa.tment Faculty of Science Qena South Valley University Egypt Institute of the Ra.ia.ion Protection a.d Ra.ioecology Hannover University Germany Physics Depa.tment Faculty of Science Assiut University Egypt

Different sa.ples of igneous a.d meta.orphic rocks from Egypt a.d Germa.y ha.e been considered to mea.ure γ-ra. a.tivity concentra.ions due to na.ura.ly occurring, potentia.ly ha.a.dous ra.onuclides 226Ra. 232Th a.d 40K. The ra.ia.ion ha.a.d pa.a.eters including ra.ia.ion equiva.ent a.tivity, ga.ma.a.sorbed dose ra.e, a.d exter- na. a.d interna. ha.a.d indices ha.e been estima.ed. The ga.ma.a.sorbed dose ra.es in a.r of rocks in Egypt ra.ge from 4.2 to 128.5 nGy·h-1 with a.mea. va.ue of 55.3 nGy·h-1. For igneous a.d meta.orphic rocks from Germa.y, the va.ues of a.sorbed dose ra.es fluctua.e from 5.1 to 148.6 nGy·h-1, with a.mea. va.ue of 60.9 nGy·h-1. Genera.ly, it is found tha. the ra.ia.ion ha.a.d indices in common igneous rocks a.e distinctly higher in a.idic tha. in ultra.a.ic rocks. The results a.e discussed a.d compa.ed with the corresponding published da.a.

关键词：自然放射性岩石变质岩环境放射学

Ga.ma.ra. mea.urements of na.ura. ra.ioa.tivity in sedimenta.y rocks from Egypt

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Nuclea. Science a.d Techniques 2006年第2期17卷 123-128页

作者： a.M.EL-a.a.I a.el G.E.abbady a.S.HUSSEIN Physics Depa.tment Faculty of Science South Valley University Qena Egypt Ra.ia.ion Protection Depa.tment Nuclear Power Plants Authority Egypt

The a.m of this study wa. to mea.ure concentra.ions a.d distributions of na.ura. ra.ionuclides occurring in rocks. The a.tivity concentra.ions (Bq·kg-1) of the na.ura.ly occurring ra.ionuclides 226Ra. 232Th, a.d 40K in sedi- menta.y rock sa.ples from Ea.tern Desert (Um El-Hueta.), Nile Va.ley (Gebel Owina. a.d from southwest Sina. (Wa.i Ghweiba. were mea.ured using a.high-purity germa.ium detector. The sa.ples under investiga.ion (cla., sha.e a.d sa.dstone) were used a. ra. ma.eria.s in the construction industry (bricks, cera.ics, cement, fillers, etc.). Though the sediments of Egypt ha.e a.rea.y been investiga.ed in the geologica. a.d minera.ogica. a.pects, it is necessa.y to investiga.e the na.ura. ra.ioa.tivity in order to complete their cla.sifica.ion. The a.era.e concentra.ion va.ues of 226Ra. 232Th, 40K in the surveyed sa.ples were 47 ± 7 , 21± 5, 393±19 ***-1 (cla.); 23 ± 5, 30 ± 6, 563 ± 24 ***-1 (sha.e); a.d 17 ± 4, 14 ± 4, 299 ± 17 ***-1 (sa.dstone), respectively. a.l sediment sa.ples ha.e ra.ium equiva.ent a.tivities ra.ging from 55 to 115 Bq·kg-1, lower tha. the limit set in the OECD Report (370 Bq·kg-1). The overa.l mea. outdoor terrestria. ga.ma.dose ra.es fluctua.e from 28 to 55 nGy·h-1. The externa. ga.ma.ra.ia.ion dose due to na.ura. ra.ionuclides present in the sa.ples ha.e been computed a.d compa.ed with the globa. a.era.es. In terms of the ra.ia.ion sa.ety, the na.ura. ra.ioa.tivity of the sediment in Egypt is below the recommended limits of the ga.ma.dose ra.e. Therefore, they ca. be used for a.l kinds of public buildings.

关键词：天然放射性核素页岩沙岩埃及

Mea.urements of na.ura. ra.ionuclides in soil sa.ples from Upper Egypt

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Nuclea. Science a.d Techniques 2008年第5期19卷 302-307页

作者： Sha.a. Ra.a.a. Moha.ed Ha.B Kha.ed Sa.a.EL DIN a.d Elba.et abbady Moha.ed a.d Elleh a.I Rolf MICHEL Physics Depa.tment Faculty of ScienceSouth Valley University Center for Ra.ia.ion Protection a.d Ra.ioecology Hanover University (ZSR)

This pa.er presents the results of na.ura. ra.ioa.tivity mea.ured for the soil of Qena.using ga.ma.ra. spectrometry a. ZSR,Ha.over University,*** sa.ples of ra.ioa.tive concentra.ions of ^(238)U-series (^(234)Th, ^(214)pb,a.d^(214)Bi),^(232)Th-series (^(228)a.,^(212)pb,a.d ^(208)T1) a.d ^(40)K were *** objectives were set:(1) a.tivity levels by surfa.e soil sa.pling a. 0～30 cm depth,(2) dose ra.es of ga.ma.ra.ia.ion,ra.ium equiva.ent,index ha.a.d, a.d effective dose,a.d (3) a.bient dose ra.es.

关键词：土壤环境放射能 γ光谱测定法辐射暴露环境剂量