Through the Algerian orchid flora, several rare species remain endemic in the Maghreb. This note on the orchids will enrich the already existing data on the area of Tlemcen. Currently, the coexistence of orchids and s...Through the Algerian orchid flora, several rare species remain endemic in the Maghreb. This note on the orchids will enrich the already existing data on the area of Tlemcen. Currently, the coexistence of orchids and species （such as Quercus faginea subsp. tlemcenensis （DC.） M., Lonicera implexa L. and Ruscus aculeatus L.） indicates an ecological environment of dominant forest. Nevertheless, the significant frequency of fires and human pressure is leading to erosion of this area orchids richness. This work enabled us to establish a complete inventory of the orchids species that exist, with an estimate of the populations and a taxon illustration for each of them. Fourteen species （14） were indexed, during the period of spring 2011 only, in this reserve and the scoured areas which do not exceed 2000 ha, representing 29% of the total Algerian orchids species. Among the rare taxa signed ourselves： Ophrys subfusca subsp. battandieri （Rchb.） Batt. and Dactylorhiza durandii （Boiss. and Reuter） M. Lainz in Oranie （O）＊展开更多
The present work is devoted to the study of broad physiological and ecological characteris- tics of anthropophytic species on the high step- pe lands of the Tlemcen region. The bioclimatic analysis confirms the develo...The present work is devoted to the study of broad physiological and ecological characteris- tics of anthropophytic species on the high step- pe lands of the Tlemcen region. The bioclimatic analysis confirms the development of drought in this region with a dominance of spiny and/or toxic asylvatic: plant species of shrub and her- baceous size species. We used correspondence factor analysis (CFA) of the various factors causing degradation to better understand the complexity of this ecosystem, whose floristic composition was complemented by means of soil measurements (spectrum green/ecological spectrum). This analysis allowed us to identify five groups of anthropophytic species with in this highly degraded matorral. We show that this ecosystem is already showing symptoms of de-gradation, and propose a preservation policy for protecting ensuring the survival of native species under threat from human activities.展开更多
Of the four national hunting reserves in Algeria, the Mounts of Tlemcen Moutas reserve http://reservebio-tlm.com,characterized by a large area, reliefs and a specific climate, implies significant floristic and faunist...Of the four national hunting reserves in Algeria, the Mounts of Tlemcen Moutas reserve http://reservebio-tlm.com,characterized by a large area, reliefs and a specific climate, implies significant floristic and faunistic richness. Currently, the coexistence of species, such asQuercus fagineasubsp. tlemcenensis(DC.) M.,Lonicera implexaL., Ruscus aculeatusL., indicates a forest dominant ecological atmosphere, although the region has experienced repeated fires during the 90’s. In this research, a phytoecologicaland syntaxonomical analysis is obvious. More than 300 species have been inventoried and indexed in more than 70 families and this shows the importance of phyto-diversity of the studiedregion. In the analysis of the phyto-ecological parameters, we could notice a regression of the vegetal cover in its diversity.展开更多
The Tlemcen region is located in north-western Algeria and is characterized by a semi-arid bioclimate. An approach to the diversity of the malacofauna associated with Salvia officinalis was carried out in three statio...The Tlemcen region is located in north-western Algeria and is characterized by a semi-arid bioclimate. An approach to the diversity of the malacofauna associated with Salvia officinalis was carried out in three stations belonging to this area from February to June 2015. The specific richness of the Gastropods is 9 divided into three families: Milacidae, Helicidae and Subulinidae. The second includes two subfamilies including that of Helicinae and that of Helicellinae. Two species are constant, 01 is incidental and the 06 others are very accidental. The relative importance of snails fluctuates according to the stations and according to the months and the seasons. In winter, in the first station the malacological richness is equal to 6. In February, the specific richness is relatively important in the 2nd station with a value equal to 7. Milax nigricans (Milacidae) has a frequency of 10% in station 1 and has a density of 0.1 in this same station. It is absent in the other two stations. Euparypha pisana has a frequency of 60% in station 3 and an abundance of 0.57 in this same station.展开更多
This work was completed on the study of the southern slope scrublands （matorrals） of Tlemcen region in the northwest of Algeria （Western Algeria）. These scrublands are under various states of degradation, made up ...This work was completed on the study of the southern slope scrublands （matorrals） of Tlemcen region in the northwest of Algeria （Western Algeria）. These scrublands are under various states of degradation, made up of Quercus ilex, Juniperus oxycedrus, Thymus ciliatus, Rosmarinus officinalis. The problems sought in this study are to give the actual position of vegetable cover and in particular that of the formations to matorrals currently existing in the southern slope of the area of Tlemcen, while being based on the phytoecological aspect of the vegetable groupings which constitute this inheritance. Sampling is the first phase of work based on the analysis of the spatial variations of the structure and composition floristic and considering the nature of the problem to be treated, the authors considered to be useful to use the method Zuricho Montpeli6raine developed at the point by Braun-Blanquet, the method usually used consists to collect all the plant species and to make the list of the species on a small square of surface 100 m2 （have it minimal）. The floristic readings （150 on the whole） were taken according to the method of Braun-Blanquet. Our results show that there exists a therophytisation marked by a general invasion of annual species as show us as the synergistic action of the aridity and the anthropic action generated important modifications on the level of the vegetation in the dynamic direction. This advanced degradation leads a steppisation which results in a substitution of the elements of the matorrals by species more adapted much the xericity.展开更多
In the world,digestive cancers represent a major public health problem by their frequency and severity.Digestive tract cancers are very common malignant tumors worldwide and are an important cause of cancer-related de...In the world,digestive cancers represent a major public health problem by their frequency and severity.Digestive tract cancers are very common malignant tumors worldwide and are an important cause of cancer-related death.The objective of our study was to determinate the survival of digestive cancers in the province of Tlemcen over a period of 5 years.This is a prognostic historical-prospective study with an exhaustive collection data,which consists of studying the 5-year survival of digestive cancers in the province of Tlemcen,of all patients with digestive cancers whatever the stage,diagnosed between 2011 and 2012 and histologically confirmed in subjects residing in the province of Tlemcen at the moment of diagnosis.The subjects of our study were identified from the cancer registry of Tlemcen.In total,408 cases of digestive cancers were diagnosed over 2 years in Tlemcen province.Most digestive cancers were characterized by a predominance of men except for cancer of the liver,gallbladder and bile ducts but whatever the sex,these cancers occur mainly in subjects whose age is greater than or equal to 45 years.Topographically,for both sexes combined,the colorectum followed by the stomach were the organs most affected by digestive cancers.Histopathologically,a predominance of adenocarcinoma has been noted.The 5-year global survival rate of all digestive cancers was 55.4%,depending on the localization;colorectal cancer,small bowel cancer,gallbladder and bile ducts cancer,stomach and esophagus cancers are cancers of intermediate prognosis whose survival in 5 years is between 40%and 80%.Liver cancer and pancreatic cancer remain poor prognosis cancers with 5-year survival rates of 23.08%and 33.3%respectively.The survival of digestive cancers must be improved by adequate care and surveillance of patients.The prevention of colorectal cancers which occupy the first place among the digestive cancers is based essentially on the knowledge of the risk factors and the screening allowing the improvement of the survival rate.The registry of cancer remains a fundamental tool of any cancer control program;it constitutes a starting source for the analysis of survival.展开更多
Hydatid disease is considered as an important emerging neglected disease worldwide.Cystic echinococcosis is a neglected disease of public health significance in many low and middle-income countries.The objective of ou...Hydatid disease is considered as an important emerging neglected disease worldwide.Cystic echinococcosis is a neglected disease of public health significance in many low and middle-income countries.The objective of our study was to determine the epidemiological profile of human hydatidosis in Tlemcen.A prospective study was conducted at University Hospital Center(UHC)of Tlemcen,from 2003 to 2018 from the declaration of notifiable diseases.Data entry and analysis was done using Epi-info software 6.One hundred and fifty-eight(158)patients were declared during 16 years of registartion at the UHC of Tlemcen.Ninety three point zero three percent(93.03%)of the reports of cases were received from the surgical services and 6 cases from the pneumology department.A slight female predominance was noted with sex-ratio(Females/Males):1.15.More than half of the patients were subjects over 40 years old.Three cases were noted in children.The average age was 42.38±17.14 years.The liver was the most frequent organ involved in our study followed by pulmonary localization.Fifty one point eight seven(51.87%)of cases were from rural areas and 46.2%from urban areas.Human hydatidosis remains an under-reported and neglected disease in Tlemcen whose fight is essentially based on preventive measures and requires multisectoral collaboration.展开更多
The region of Tlemcen is situated in the north-west of Algeria. The aridity of the climate had lead to the development of the matorral, a state of degradation of the Mediterranean, and the composed xerophytes plants s...The region of Tlemcen is situated in the north-west of Algeria. The aridity of the climate had lead to the development of the matorral, a state of degradation of the Mediterranean, and the composed xerophytes plants such as doum and diss, had been found. Chamaerops humilis, xerophyte plant, with special morphologic and botanic character presents a resistance of these climatic. The authors have proposed study of fauna closly linked to this plant. A faunistic inventory was realized in the Mansourah area （region of Tlemcen）. Four stations have been described. Collecting sample was performed during June 2003-Mar. 2004, replying on sixteen （16） prelevements. The number of species were estimated of about 136, in which 111 are Arthropoda, the Entomofauna represented by 97 species and the other inventory are Arachnida by 8 species and Myriapoda by 6 species. 18 species are related to Gastropoda. The vertebrates are few. The importance of different groups＇ recolted on the Chamaerops humilis in the four stations is done particular to the insects. Analysis factorial correspondence （A.F.C） show different grouping of animal species.展开更多
In recent years, the anthropic action on scrubs in the region of Tlemcen (a province in western Algeria) has represented a threat to the groups of Chamaerops humilis L. (Arecaceae). The main purpose of the present inv...In recent years, the anthropic action on scrubs in the region of Tlemcen (a province in western Algeria) has represented a threat to the groups of Chamaerops humilis L. (Arecaceae). The main purpose of the present investigation is to highlight the relationship between Chamaerops humilis and its biotope. Taking advantage of the refurbishment works in the study area, clumps of Chamaerops humilis, freshly dug by machinery, were collected and used to conduct some measurements. A total of 34 clusters were considered. The main parameters to be studied are: 1. The height of the tangle of roots and the number of roots in each cluster;2. The weight of soil trapped between roots;3. Physico-chemical properties of soil in which taxa grow. The results obtained showed that the average weight of soil retained by the clumps was important (70.3 kg);the average height of the tangle was 68.4 cm and the average number of roots was 382. The tangle of roots, of various stocks of Chamaerops humilis, creates a root network, very tangled in its upper part, thereby trapping a significant amount of soil. The statistical analyses of pairs of parameters, considered in the present work (height of the tangle, mass of soil trapped by roots and number of roots), were found to be highly correlated. These analyses allowed identifying the relationships existing between the studied parameters. They also helped to deduce the role of the taxon in the in situ conservation of edaphic potential.展开更多
The technical and financial assistance plays a fundamental role in agriculture in order to maintain its durability especially in disadvantaged regions. For this purpose, the present work aims to evaluate the technical...The technical and financial assistance plays a fundamental role in agriculture in order to maintain its durability especially in disadvantaged regions. For this purpose, the present work aims to evaluate the technical and financial assistance according to the opinions of farms in some mountainous areas belonging to the mountains of Tlemcen wihch are situated in the north-western Algeria. The results obtained showed that to improve the relation between bank and farms, public financial institutions should review the conditions for bank credits granting according to sociological particularity of the Algerian population who is very attached to the instructions of Islam religion which prohibits interest rates generated by bank credits. In addition, strengthening these mountainous areas by qualified technical personnel is a necessary operation to improving the knowledge and the know-how of farmers which are very insufficient in these areas.展开更多
The region of Tlemcen is located in the northwestern part of Algeria. Its arid climate leads to the degradation of vegetation in open formation, where can be found the doum, the diss and broom. Other aromatic species ...The region of Tlemcen is located in the northwestern part of Algeria. Its arid climate leads to the degradation of vegetation in open formation, where can be found the doum, the diss and broom. Other aromatic species such as rosemary, thyme, lavender and horehound are considered as well. The four previous aromatic species belong to the family Labiatae for their morphological and botanical characters. The authors propose to design an approach to identify the diversity of malacofauna found on these different Lamiaceae. These are certainly a nutritional source for this malacological fauna. So, a survey was performed in various stations. The malacological richness is estimated to be 19 for thyme, 18 for rosemary, 16 for lavender, and finally 7 for horehound. It includes four families, namely Milacidae, Sphincterochilidae, Helicidae and Subulinidae. Milacidae are present only in horehound and lavender stations. On the other hand, the Sphincterochilidae, namely Sphincterochila candidissima, is absent on horehound. Rumina decollata is the only species in the family Subulinidae. As for the family Helicidae, it is the richest and includes two specific subfamilies： Helicinae and Helicellinae. The first subfamily consists of 11 species of thyme, 10 species of rosemary and lavender. The second subfamily includes 6 species of thyme and rosemary and 3 of lavender, respectively. In addition, the author tries to look for the malacological species specific to each of these plants and those who are common to them as well. Finally, the vertical distribution of gastropods is given.展开更多
Cutaneous leishmaniasis (CL) is a widespread parasitic disease and a public health problem worldwide. It is an endemic and notifiable disease in Algeria. Our objective was to know the epidemiological characteristics a...Cutaneous leishmaniasis (CL) is a widespread parasitic disease and a public health problem worldwide. It is an endemic and notifiable disease in Algeria. Our objective was to know the epidemiological characteristics and to determine the endemic regions of the CL in the town of Tlemcen. A descriptive study was conducted with a prospective collection over five years, from 2012 to 2016, based on the systematic declaration of CL cases received from the various departments of the University Hospital center (UHC) of Tlemcen. Data entry and analysis was done by Epi-info 6 software. Thirty-four cases of cutaneous leishmaniasis, 27 of which are autochthonous were reported at the UHC of Tlemcen during 5 years with a female predominance;sex ratio (h/f): 0.79. The most affected age group was 40-50 years old. Six cases occurred in children under 16 years, 80% of the reports were received by the dermatology department. The highest peak was recorded in 2013;autumnal predominance was noted in 30% of cases. All patients lived or had been in endemic areas. Vector control campaigns must be reinforced to fight against leishmaniasis in the town of Tlemcen, also, the improvement of habitat conditions for populations at risk.展开更多
In the cities of Algeria, Culex pipiens L. (Diptera: Culicidae) is the mosquito which presents most interest because of its wide geographical distribution and of its abundance which engender a strong nuisance. Besides...In the cities of Algeria, Culex pipiens L. (Diptera: Culicidae) is the mosquito which presents most interest because of its wide geographical distribution and of its abundance which engender a strong nuisance. Besides, its role of vector of the virus West Nile arouses a particular interest in the Mediterranean Basin. These insects are generally controlled by conventional insecticides for the greater part, chemicals which cause in the long term side effects (effects on the not aimed bodies and the resistance of the aimed species). A research for the effect of the bioinsecticide Bacillus thuringiensis (granulated commercial shape in 200 IUT1/mg) was realized on préimaginales populations of the artificial deposits sites (taken directly of them natural the deposits sites) and cleansed populations (stemming from a breeding) having never been handled previously, taking into account local weather and physico-chemical conditions. Analyses of variance, allowed to determine the combined effect of the factor measure and of the factor time which by increasing, increase the efficiency of the product. The results of the rates of mortalities registered after treatment allowed to loosen the DL50 and the DL90 for every embryonic stage. From the results, we estimated the degree of sensibility of the larva populations of Culex pipiens which have proved heterogeneous in partial tolerance in Bacillus thuringiensis for the populations of the sensitive artificial and homogeneous the deposits sites for those stemming from the breeding.展开更多
Tlemcen region is characterized by a Mediterranean climate, with a remarkable vegetal cover. The latter is influenced by the anthropozoological action. For that, we realized a phytoecological study based on the minimu...Tlemcen region is characterized by a Mediterranean climate, with a remarkable vegetal cover. The latter is influenced by the anthropozoological action. For that, we realized a phytoecological study based on the minimum area classical method [1] which allows us to have a good overview on plant biodiversity and better analyze and interpret the vegetation at different levels (systematic composition;biological, morphological and biogeographical characterizations;stratification;and plant species inventory which we hope comprehensive). The results show that our ecosystems are disrupted because therophytisation, before last vegetation dynamics element [2], settles giving up a few feet of cork and holm oaks species of ancient forest.展开更多
The Great Mosque of Tlemcen is a unique case,as it is one of the few mosques dating back to the Almoravid period that is almost intact.It has evolved in a constantly changing space and now has a conjoined public squar...The Great Mosque of Tlemcen is a unique case,as it is one of the few mosques dating back to the Almoravid period that is almost intact.It has evolved in a constantly changing space and now has a conjoined public square,following an occidental configuration,which is quite rare.The size of this square suggests that it could be put to use as an additional vector for the valorisation of the mosque,but the current situation is different.This added space,introduced by occidental culture,creates a dual architectural language with several other buildings that mark all the layers of evolution in the urban fabric.Apart from its religious function,this mosque used to play the role of a covered public square,a role that has eroded over time.The aim of this research is to analyse the relationship between the building and its surroundings,as well as the population’s perception of this relationship.Additionally,the research is intended to highlight changes in the perception of the Great Mosque of Tlemcen’s public square over time,depending on historical,political,and social contexts.This research relies on an approach that combines different methods,including a thorough analysis of historical,cartographic,and legislative documents.Through this approach,we were able to conduct a comparative analysis with other similar cases.Finally,field research allowed us to understand the relationship between space and society.Despite the legal recognition of the surroundings as a historical monument,this status is not widely perceived and integrated into the population’s sense of heritage space.This is reflected in private and even public actions,despite the instrumentalisation of this heritage status,with appropriations of protected space that occur outside of regulations and become part of the landscape expression of the building in its environment.展开更多
文摘Through the Algerian orchid flora, several rare species remain endemic in the Maghreb. This note on the orchids will enrich the already existing data on the area of Tlemcen. Currently, the coexistence of orchids and species （such as Quercus faginea subsp. tlemcenensis （DC.） M., Lonicera implexa L. and Ruscus aculeatus L.） indicates an ecological environment of dominant forest. Nevertheless, the significant frequency of fires and human pressure is leading to erosion of this area orchids richness. This work enabled us to establish a complete inventory of the orchids species that exist, with an estimate of the populations and a taxon illustration for each of them. Fourteen species （14） were indexed, during the period of spring 2011 only, in this reserve and the scoured areas which do not exceed 2000 ha, representing 29% of the total Algerian orchids species. Among the rare taxa signed ourselves： Ophrys subfusca subsp. battandieri （Rchb.） Batt. and Dactylorhiza durandii （Boiss. and Reuter） M. Lainz in Oranie （O）＊
文摘The present work is devoted to the study of broad physiological and ecological characteris- tics of anthropophytic species on the high step- pe lands of the Tlemcen region. The bioclimatic analysis confirms the development of drought in this region with a dominance of spiny and/or toxic asylvatic: plant species of shrub and her- baceous size species. We used correspondence factor analysis (CFA) of the various factors causing degradation to better understand the complexity of this ecosystem, whose floristic composition was complemented by means of soil measurements (spectrum green/ecological spectrum). This analysis allowed us to identify five groups of anthropophytic species with in this highly degraded matorral. We show that this ecosystem is already showing symptoms of de-gradation, and propose a preservation policy for protecting ensuring the survival of native species under threat from human activities.
文摘Of the four national hunting reserves in Algeria, the Mounts of Tlemcen Moutas reserve http://reservebio-tlm.com,characterized by a large area, reliefs and a specific climate, implies significant floristic and faunistic richness. Currently, the coexistence of species, such asQuercus fagineasubsp. tlemcenensis(DC.) M.,Lonicera implexaL., Ruscus aculeatusL., indicates a forest dominant ecological atmosphere, although the region has experienced repeated fires during the 90’s. In this research, a phytoecologicaland syntaxonomical analysis is obvious. More than 300 species have been inventoried and indexed in more than 70 families and this shows the importance of phyto-diversity of the studiedregion. In the analysis of the phyto-ecological parameters, we could notice a regression of the vegetal cover in its diversity.
文摘The Tlemcen region is located in north-western Algeria and is characterized by a semi-arid bioclimate. An approach to the diversity of the malacofauna associated with Salvia officinalis was carried out in three stations belonging to this area from February to June 2015. The specific richness of the Gastropods is 9 divided into three families: Milacidae, Helicidae and Subulinidae. The second includes two subfamilies including that of Helicinae and that of Helicellinae. Two species are constant, 01 is incidental and the 06 others are very accidental. The relative importance of snails fluctuates according to the stations and according to the months and the seasons. In winter, in the first station the malacological richness is equal to 6. In February, the specific richness is relatively important in the 2nd station with a value equal to 7. Milax nigricans (Milacidae) has a frequency of 10% in station 1 and has a density of 0.1 in this same station. It is absent in the other two stations. Euparypha pisana has a frequency of 60% in station 3 and an abundance of 0.57 in this same station.
文摘This work was completed on the study of the southern slope scrublands （matorrals） of Tlemcen region in the northwest of Algeria （Western Algeria）. These scrublands are under various states of degradation, made up of Quercus ilex, Juniperus oxycedrus, Thymus ciliatus, Rosmarinus officinalis. The problems sought in this study are to give the actual position of vegetable cover and in particular that of the formations to matorrals currently existing in the southern slope of the area of Tlemcen, while being based on the phytoecological aspect of the vegetable groupings which constitute this inheritance. Sampling is the first phase of work based on the analysis of the spatial variations of the structure and composition floristic and considering the nature of the problem to be treated, the authors considered to be useful to use the method Zuricho Montpeli6raine developed at the point by Braun-Blanquet, the method usually used consists to collect all the plant species and to make the list of the species on a small square of surface 100 m2 （have it minimal）. The floristic readings （150 on the whole） were taken according to the method of Braun-Blanquet. Our results show that there exists a therophytisation marked by a general invasion of annual species as show us as the synergistic action of the aridity and the anthropic action generated important modifications on the level of the vegetation in the dynamic direction. This advanced degradation leads a steppisation which results in a substitution of the elements of the matorrals by species more adapted much the xericity.
文摘In the world,digestive cancers represent a major public health problem by their frequency and severity.Digestive tract cancers are very common malignant tumors worldwide and are an important cause of cancer-related death.The objective of our study was to determinate the survival of digestive cancers in the province of Tlemcen over a period of 5 years.This is a prognostic historical-prospective study with an exhaustive collection data,which consists of studying the 5-year survival of digestive cancers in the province of Tlemcen,of all patients with digestive cancers whatever the stage,diagnosed between 2011 and 2012 and histologically confirmed in subjects residing in the province of Tlemcen at the moment of diagnosis.The subjects of our study were identified from the cancer registry of Tlemcen.In total,408 cases of digestive cancers were diagnosed over 2 years in Tlemcen province.Most digestive cancers were characterized by a predominance of men except for cancer of the liver,gallbladder and bile ducts but whatever the sex,these cancers occur mainly in subjects whose age is greater than or equal to 45 years.Topographically,for both sexes combined,the colorectum followed by the stomach were the organs most affected by digestive cancers.Histopathologically,a predominance of adenocarcinoma has been noted.The 5-year global survival rate of all digestive cancers was 55.4%,depending on the localization;colorectal cancer,small bowel cancer,gallbladder and bile ducts cancer,stomach and esophagus cancers are cancers of intermediate prognosis whose survival in 5 years is between 40%and 80%.Liver cancer and pancreatic cancer remain poor prognosis cancers with 5-year survival rates of 23.08%and 33.3%respectively.The survival of digestive cancers must be improved by adequate care and surveillance of patients.The prevention of colorectal cancers which occupy the first place among the digestive cancers is based essentially on the knowledge of the risk factors and the screening allowing the improvement of the survival rate.The registry of cancer remains a fundamental tool of any cancer control program;it constitutes a starting source for the analysis of survival.
文摘Hydatid disease is considered as an important emerging neglected disease worldwide.Cystic echinococcosis is a neglected disease of public health significance in many low and middle-income countries.The objective of our study was to determine the epidemiological profile of human hydatidosis in Tlemcen.A prospective study was conducted at University Hospital Center(UHC)of Tlemcen,from 2003 to 2018 from the declaration of notifiable diseases.Data entry and analysis was done using Epi-info software 6.One hundred and fifty-eight(158)patients were declared during 16 years of registartion at the UHC of Tlemcen.Ninety three point zero three percent(93.03%)of the reports of cases were received from the surgical services and 6 cases from the pneumology department.A slight female predominance was noted with sex-ratio(Females/Males):1.15.More than half of the patients were subjects over 40 years old.Three cases were noted in children.The average age was 42.38±17.14 years.The liver was the most frequent organ involved in our study followed by pulmonary localization.Fifty one point eight seven(51.87%)of cases were from rural areas and 46.2%from urban areas.Human hydatidosis remains an under-reported and neglected disease in Tlemcen whose fight is essentially based on preventive measures and requires multisectoral collaboration.
文摘The region of Tlemcen is situated in the north-west of Algeria. The aridity of the climate had lead to the development of the matorral, a state of degradation of the Mediterranean, and the composed xerophytes plants such as doum and diss, had been found. Chamaerops humilis, xerophyte plant, with special morphologic and botanic character presents a resistance of these climatic. The authors have proposed study of fauna closly linked to this plant. A faunistic inventory was realized in the Mansourah area （region of Tlemcen）. Four stations have been described. Collecting sample was performed during June 2003-Mar. 2004, replying on sixteen （16） prelevements. The number of species were estimated of about 136, in which 111 are Arthropoda, the Entomofauna represented by 97 species and the other inventory are Arachnida by 8 species and Myriapoda by 6 species. 18 species are related to Gastropoda. The vertebrates are few. The importance of different groups＇ recolted on the Chamaerops humilis in the four stations is done particular to the insects. Analysis factorial correspondence （A.F.C） show different grouping of animal species.
文摘In recent years, the anthropic action on scrubs in the region of Tlemcen (a province in western Algeria) has represented a threat to the groups of Chamaerops humilis L. (Arecaceae). The main purpose of the present investigation is to highlight the relationship between Chamaerops humilis and its biotope. Taking advantage of the refurbishment works in the study area, clumps of Chamaerops humilis, freshly dug by machinery, were collected and used to conduct some measurements. A total of 34 clusters were considered. The main parameters to be studied are: 1. The height of the tangle of roots and the number of roots in each cluster;2. The weight of soil trapped between roots;3. Physico-chemical properties of soil in which taxa grow. The results obtained showed that the average weight of soil retained by the clumps was important (70.3 kg);the average height of the tangle was 68.4 cm and the average number of roots was 382. The tangle of roots, of various stocks of Chamaerops humilis, creates a root network, very tangled in its upper part, thereby trapping a significant amount of soil. The statistical analyses of pairs of parameters, considered in the present work (height of the tangle, mass of soil trapped by roots and number of roots), were found to be highly correlated. These analyses allowed identifying the relationships existing between the studied parameters. They also helped to deduce the role of the taxon in the in situ conservation of edaphic potential.
文摘The technical and financial assistance plays a fundamental role in agriculture in order to maintain its durability especially in disadvantaged regions. For this purpose, the present work aims to evaluate the technical and financial assistance according to the opinions of farms in some mountainous areas belonging to the mountains of Tlemcen wihch are situated in the north-western Algeria. The results obtained showed that to improve the relation between bank and farms, public financial institutions should review the conditions for bank credits granting according to sociological particularity of the Algerian population who is very attached to the instructions of Islam religion which prohibits interest rates generated by bank credits. In addition, strengthening these mountainous areas by qualified technical personnel is a necessary operation to improving the knowledge and the know-how of farmers which are very insufficient in these areas.
文摘The region of Tlemcen is located in the northwestern part of Algeria. Its arid climate leads to the degradation of vegetation in open formation, where can be found the doum, the diss and broom. Other aromatic species such as rosemary, thyme, lavender and horehound are considered as well. The four previous aromatic species belong to the family Labiatae for their morphological and botanical characters. The authors propose to design an approach to identify the diversity of malacofauna found on these different Lamiaceae. These are certainly a nutritional source for this malacological fauna. So, a survey was performed in various stations. The malacological richness is estimated to be 19 for thyme, 18 for rosemary, 16 for lavender, and finally 7 for horehound. It includes four families, namely Milacidae, Sphincterochilidae, Helicidae and Subulinidae. Milacidae are present only in horehound and lavender stations. On the other hand, the Sphincterochilidae, namely Sphincterochila candidissima, is absent on horehound. Rumina decollata is the only species in the family Subulinidae. As for the family Helicidae, it is the richest and includes two specific subfamilies： Helicinae and Helicellinae. The first subfamily consists of 11 species of thyme, 10 species of rosemary and lavender. The second subfamily includes 6 species of thyme and rosemary and 3 of lavender, respectively. In addition, the author tries to look for the malacological species specific to each of these plants and those who are common to them as well. Finally, the vertical distribution of gastropods is given.
文摘Cutaneous leishmaniasis (CL) is a widespread parasitic disease and a public health problem worldwide. It is an endemic and notifiable disease in Algeria. Our objective was to know the epidemiological characteristics and to determine the endemic regions of the CL in the town of Tlemcen. A descriptive study was conducted with a prospective collection over five years, from 2012 to 2016, based on the systematic declaration of CL cases received from the various departments of the University Hospital center (UHC) of Tlemcen. Data entry and analysis was done by Epi-info 6 software. Thirty-four cases of cutaneous leishmaniasis, 27 of which are autochthonous were reported at the UHC of Tlemcen during 5 years with a female predominance;sex ratio (h/f): 0.79. The most affected age group was 40-50 years old. Six cases occurred in children under 16 years, 80% of the reports were received by the dermatology department. The highest peak was recorded in 2013;autumnal predominance was noted in 30% of cases. All patients lived or had been in endemic areas. Vector control campaigns must be reinforced to fight against leishmaniasis in the town of Tlemcen, also, the improvement of habitat conditions for populations at risk.
文摘In the cities of Algeria, Culex pipiens L. (Diptera: Culicidae) is the mosquito which presents most interest because of its wide geographical distribution and of its abundance which engender a strong nuisance. Besides, its role of vector of the virus West Nile arouses a particular interest in the Mediterranean Basin. These insects are generally controlled by conventional insecticides for the greater part, chemicals which cause in the long term side effects (effects on the not aimed bodies and the resistance of the aimed species). A research for the effect of the bioinsecticide Bacillus thuringiensis (granulated commercial shape in 200 IUT1/mg) was realized on préimaginales populations of the artificial deposits sites (taken directly of them natural the deposits sites) and cleansed populations (stemming from a breeding) having never been handled previously, taking into account local weather and physico-chemical conditions. Analyses of variance, allowed to determine the combined effect of the factor measure and of the factor time which by increasing, increase the efficiency of the product. The results of the rates of mortalities registered after treatment allowed to loosen the DL50 and the DL90 for every embryonic stage. From the results, we estimated the degree of sensibility of the larva populations of Culex pipiens which have proved heterogeneous in partial tolerance in Bacillus thuringiensis for the populations of the sensitive artificial and homogeneous the deposits sites for those stemming from the breeding.
文摘Tlemcen region is characterized by a Mediterranean climate, with a remarkable vegetal cover. The latter is influenced by the anthropozoological action. For that, we realized a phytoecological study based on the minimum area classical method [1] which allows us to have a good overview on plant biodiversity and better analyze and interpret the vegetation at different levels (systematic composition;biological, morphological and biogeographical characterizations;stratification;and plant species inventory which we hope comprehensive). The results show that our ecosystems are disrupted because therophytisation, before last vegetation dynamics element [2], settles giving up a few feet of cork and holm oaks species of ancient forest.
文摘The Great Mosque of Tlemcen is a unique case,as it is one of the few mosques dating back to the Almoravid period that is almost intact.It has evolved in a constantly changing space and now has a conjoined public square,following an occidental configuration,which is quite rare.The size of this square suggests that it could be put to use as an additional vector for the valorisation of the mosque,but the current situation is different.This added space,introduced by occidental culture,creates a dual architectural language with several other buildings that mark all the layers of evolution in the urban fabric.Apart from its religious function,this mosque used to play the role of a covered public square,a role that has eroded over time.The aim of this research is to analyse the relationship between the building and its surroundings,as well as the population’s perception of this relationship.Additionally,the research is intended to highlight changes in the perception of the Great Mosque of Tlemcen’s public square over time,depending on historical,political,and social contexts.This research relies on an approach that combines different methods,including a thorough analysis of historical,cartographic,and legislative documents.Through this approach,we were able to conduct a comparative analysis with other similar cases.Finally,field research allowed us to understand the relationship between space and society.Despite the legal recognition of the surroundings as a historical monument,this status is not widely perceived and integrated into the population’s sense of heritage space.This is reflected in private and even public actions,despite the instrumentalisation of this heritage status,with appropriations of protected space that occur outside of regulations and become part of the landscape expression of the building in its environment.
