scholarly journals Stock mapping, size structure and biological parameters of the clam Polititapes aureus in the shellfish production area of the southern Tunisian waters (Central Mediterranean)

2021 ◽  
Vol 50 (2) ◽  
pp. 128-136
Author(s):  
Abdelkarim Derbali ◽  
Othman Jarboui
Keyword(s):  
Size Structure ◽  
Current Status ◽  
Fishing Industry ◽  
Market Demand ◽  
Artisanal Fishery ◽  
Ecological Role ◽  
Central Mediterranean ◽  
Production Area ◽  
Exploitation Status

Abstract The clam Polititapes aureus is one of the most abundant shellfish species in the southern Tunisian waters. Its current exploitation status and management are becoming a major concern for fishing industry in Tunisia. The significant ecological role of the species and possible future commercial benefits require a better knowledge of its stock. This research is the first attempt to investigate its current status in an area with the largest shellfish production. The obtained results showed a scattered distribution. The stock density ranged from 0 to 124 ind. m−2, and biomass values varied from 0 to 300 g m−2. This results in a remarkable biomass of 201.2 (± 64.6) t and high abundance reaching 91.3 ± 32.9 million individuals, estimated an area of 4182 ha. The species distribution was also investigated, with the size ranging from 4.9 to 35.34 mm. The overall sex ratio (F:M) was 1.26:1, which significantly deviated different from parity (1:1). The main environmental factors were identified and several abiotic parameters were found to strongly affect the spread of the clam species. The clam reproduce well and is expected to almost meet the domestic market demand through artisanal fishery.

Psychological Resilience Provides No Independent Protection From Suicidal Risk

Crisis ◽  
2016 ◽  
Vol 37 (2) ◽  
pp. 130-139 ◽  
Author(s):  
Danica W. Y. Liu ◽  
A. Kate Fairweather-Schmidt ◽  
Richard Burns ◽  
Rachel M. Roberts ◽  
Kaarin J. Anstey
Keyword(s):  
Risk Factors ◽  
Well Being ◽  
Current Status ◽  
Psychological Resilience ◽  
Cross Sectional ◽  
Life Project ◽  
Resilience Factors ◽  
First Time

Abstract. Background: Little is known about the role of resilience in the likelihood of suicidal ideation (SI) over time. Aims: We examined the association between resilience and SI in a young-adult cohort over 4 years. Our objectives were to determine whether resilience was associated with SI at follow-up or, conversely, whether SI was associated with lowered resilience at follow-up. Method: Participants were selected from the Personality and Total Health (PATH) Through Life Project from Canberra and Queanbeyan, Australia, aged 28–32 years at the first time point and 32–36 at the second. Multinomial, linear, and binary regression analyses explored the association between resilience and SI over two time points. Models were adjusted for suicidality risk factors. Results: While unadjusted analyses identified associations between resilience and SI, these effects were fully explained by the inclusion of other suicidality risk factors. Conclusion: Despite strong cross-sectional associations, resilience and SI appear to be unrelated in a longitudinal context, once risk/resilience factors are controlled for. As independent indicators of psychological well-being, suicidality and resilience are essential if current status is to be captured. However, the addition of other factors (e.g., support, mastery) makes this association tenuous. Consequently, resilience per se may not be protective of SI.

INTERPRETATION OF SINO-RUSSIAN CULTURE AND HUMANITIES COOPERATION IN THE NEW ERA

2020 ◽  
Vol 10 (3) ◽  
pp. 186-193
Author(s):  
REN YANYAN ◽  
Keyword(s):  
Current Status ◽  
Human Relations ◽  
New Era ◽  
Russian Culture ◽  
The People ◽  
Starting Point ◽  
Cooperative Partnership ◽  
Belt And Road ◽  
The Belt And Road

The friendship between nations lies in the mutual affinity of the people, and the people’s affinity lies in the communion of hearts. The cultural and humanities cooperation between China and Russia has a long history. In recent years, under the role of the“Belt and Road” initiative, the SCO, and the Sino-Russian Humanities Cooperation Committee, Sino-Russian culture and humanities cooperation has continued to deepen. Entering a new era, taking the opportunity to promote Sino-Russian relations into a “new era China-Russia comprehensive strategic cooperative partnership”, the development of human relations between the two countries has entered a new historical starting point, while also facing a series of problems and challenges. This article is based on the current status of Sino-Russian human relations in the new era, interprets the characteristics of Sino-Russian human relations in the new era, analyzes the problems and challenges of Sino-Russian human relations in the new era, and tries to propose solutions and solutions with a view to further developing Sino-Russian cultural and humanities relations in the new era. It is a useful reference, and provides a reference for future related research, and ultimately helps the Sino-Russian cultural and humanities relations in the new era to be stable and far-reaching.

Ecological Role of Exopolysaccharides of Bacillariophyta: A Review

2017 ◽  
Vol 19 (1) ◽  
pp. 5-24 ◽  
Author(s):  
E. I. Shnyukova ◽  
E. K. Zolotareva
Keyword(s):  
Ecological Role

Role of Pharmacogenomics in Antiepileptic Drug Therapy: Current Status and Future Perspectives

2018 ◽  
Vol 23 (37) ◽  
pp. 5760-5765 ◽  
Author(s):  
Antonio Gambardella ◽  
Angelo Labate ◽  
Laura Mumoli ◽  
Iscia Lopes-Cendes ◽  
Fernando Cendes
Keyword(s):  
Drug Therapy ◽  
Antiepileptic Drug ◽  
Current Status ◽  
Future Perspectives ◽  
Antiepileptic Drug Therapy

scholarly journals Membrane condenser as emerging technology for water recovery and gas pre-treatment: current status and perspectives

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Adele Brunetti ◽  
Francesca Macedonio ◽  
Giuseppe Barbieri ◽  
Enrico Drioli
Keyword(s):  
Current Status ◽  
Innovative Technology ◽  
Water Recovery ◽  
Treatment Unit ◽  
Treatment Stage ◽  
Treatment Technologies ◽  
Pre Treatment ◽  
And Control

Abstract The recent roadmap of SPIRE initiative includes the development of “new separation, extraction and pre-treatment technologies” as one of the “key actions” for boosting sustainability, enhancing the availability and quality of existing resources. Membrane condenser is an innovative technology that was recently investigated for the recovery of water vapor for waste gaseous streams, such as flue gas, biogas, cooling tower plumes, etc. Recently, it has been also proposed as pre-treatment unit for the reduction and control of contaminants in waste gaseous streams (SOx and NOx, VOCs, H2S, NH3, siloxanes, halides, particulates, organic pollutants). This perspective article reports recent progresses in the applications of the membrane condenser in the treatment of various gaseous streams for water recovery and contaminant control. After an overview of the operating principle, the membranes used, and the main results achieved, the work also proposes the role of this technology as pre-treatment stage to other separation technologies. The potentialities of the technology are also discussed aspiring to pave the way towards the development of an innovative technology where membrane condenser can cover a key role in redesigning the whole upgrading process.

Rescuing Migrants in the Central Mediterranean: The Emergence of a New Civil Humanitarianism at the Maritime Border

2019 ◽  
Vol 64 (4) ◽  
pp. 436-455
Author(s):  
Marta Esperti
Keyword(s):  
Civil Society ◽  
Research Methodology ◽  
Search And Rescue ◽  
International Organization ◽  
Central Mediterranean ◽  
The Social ◽  
Social Meanings ◽  
Humanitarian Space ◽  
First Arrival

The Central Mediterranean is the most deadly body of water in the Mediterranean Sea with at least 15,062 fatalities recorded by International Organization of Migration between 2014 and 2018. This article aims at highlighting the rise of a variety of new civil society actors engaged in the rescue of people undertaking dangerous journeys across the sea in the attempt of reaching the southern European shores. The peculiarity of the humanitarian space at sea and its political relevance are pointed out to illustrate the unfolding of the maritime border management on the Central Mediterranean route and its relation with the activity of the civil society rescue vessels. The theoretical aspiration of the article is to question the role of a proactive civil humanitarianism at sea, discussing the emergence of different political and social meanings around humanitarianism at the EU’s southern maritime border. In recent years, the increasing presence of new citizens-based organizations at sea challenges the nexus between humanitarian and emergency approaches adopted to implement security-oriented policies. This essay draws on the findings of a broader comparative work on a variety of civil society actors engaged in the search and rescue operations on the maritime route between Libya and Europe, focusing in particular on Italy as country of first arrival. The fieldwork covers a period of time going between 2016 and 2018. The research methodology is built on a multisited ethnography, the conduct of semidirective and informal interviews with both state and nonstate actors, and the analysis of various reports unraveling the social and political tensions around rescue at sea on the Central Mediterranean route.

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