Feeding Frequency And Feed Intake In The African Catfish Clarias Gariepinus (Burchell 1822)

Triplicate groups of subadult catfish (Clarias gariepinus; 102.18±30.48 g) were fed a purified diet to satiation twice or three times a day during the daylight hours for 26 days. Fish fed twice a day consumed 1.42±0.49% of their body weight per day. Those fed three times a day consumed 1.27±0.27%. The fish fed twice a day exhibited better growth and food conversion. Despite the use of purified diets, performance indices for the group fed twice per day were good, compared to previously reported data. The specific growth rate was 1.24±0.08%, the weight gain was 38.51±2.96% and the food conversion ratio was 0.72±0.13

Groundwater dependent ecosystems of coastal aquifers. The case of Gialova (Messinia, Greece) hydrosystem.

Εθνικό Μετσόβιο Πολυτεχνείο--Μεταπτυχιακή Εργασία. Διεπιστημονικό-Διατμηματικό Πρόγραμμα Μεταπτυχιακών Σπουδών (Δ.Π.Μ.Σ.) “Περιβάλλον και Ανάπτυξη των Ορεινών Περιοχών

Revision of Carpal Tunnel Release due to Palmaris Longus Profundus

Purpose. The palmaris longus profundus has been documented throughout the literature as a cause of carpal tunnel syndrome. We present a case of palmaris profundus tendon removal during the revision of carpal tunnel release. Method. During a carpal tunnel release in a 66-year-old woman, palmaris profundus tendon was found inside the tunnel under the transverse carpal ligament, just above the median nerve, but it was left intact. The patient complained of pain in the hand at night and weakness of her hand one month after surgery. We decided on a revision of the carpal tunnel release. The palmaris profundus tendon was found and was removed. Results. The patient had a normal postoperative course. Two months later she returned to her normal activities and was asymptomatic. Conclusions. When a palmaris profundus muscle is located in carpal tunnel, we recommend its excision during carpal tunnel release. This excision will eliminate the possibility of recurrent compression over the median nerve

The Use of Appropriate Cultivar of Basil (Ocimum basilicum) Can Increase Water Use Efficiency under Water Stress

Drought is one of the major yield constraints of crop productivity for many crops. In addition, nowadays, climate change creates new challenges for crop adaptation in stressful environments. The objective of the present study was to determine the effect of water stress on five cultivars of basil (Mrs Burns, Cinnamon, Sweet, Red Rubin, Thai) and whether water use efficiency (WUE) can be increased by using the appropriate cultivar. Water stress affected the fresh and dry weight and also the partitioning of dry matter to leaves, flowers, and stems. Also, there are cultivars, such as Mrs Burns and Sweet, which were not affected by the limited amount of water and continued to produce a high amount of dry matter and also showed high essential oil yield. Essential oil content was not affected by the irrigation; however, essential oil yield was affected by the irrigation, and the highest values were found at Mrs Burns. The water use efficiency was affected by the cultivar and irrigation level, and the highest was found at Mrs Burns. The results show that using appropriate cultivars basil can achieve higher WUE and allow saving water resources and utilizing fields in areas with limited water resources for irrigation

Partial Replacement of Mineral-N Fertilizer Using Compost and Biochar to Improve Growth and Yield of Peanut (Arachishypogaea L.) Grown on a Sandy Loam Soil

In the 2017 and 2018 summer seasons, two field experiments were conducted at Ismailia Governorate, Egypt, to evaluate the effect of adding organic amendments combined with 50% of the recommended 100 kg ha-1 of mineral-N fertilization Ammonium nitrate (330 g N kg-1 ). The five organic sources were three types of biochar and two types of compost at a rate of 24 Mg ha-1 on peanuts (Arachis hypogaea L. Giza 6) grown on a sandy soil. Available N, P, K, Fe, Mn, and Zn concentrations in the soil after harvest increased due to the additional treatments, and the highest concentrations were due to Compost B (town refuse residues)+50 kg N ha-1 . Electrical Conductivity (EC) and soil pH decreased due to compost addition but slightly increased owing to biochar addition. The highest chlorophyll, protein, and oil contents of 42.8 mg g-1 , 226 g kg-1 , and 448 g kg-1 , respectively, were obtained due to addition of 50 Kg N ha-1 AN + Compost B. Generally, the addition of N fertilization 50 kg N ha-1 combined with compost had a favorable effect in improving soil properties and increasing peanut, oil, protein content and nutrient uptake as compared to other treatments

Using Brain Waves to Control Computers and Machines

Humans have traditionally interacted with computers or machines by using their hands to manipulate computer components. This kind of human-computer interaction (HCI), however, considerably limits the human’s freedom to communicate with machines. Over the years, many attempts have been made to develop technologies that include other modalities used for communication, for example, speech or gestures, to make HCI more intuitive. Recent advances in cognitive neuroscience and neuroimaging technologies in particular have allowed for the establishment of direct communication between the human brain and machines. This ability is made possible through invasive and noninvasive sensors that can monitor physiological processes reflected in brain waves, which are translated online into control signals for external devices or machines