Heat transfer analysis in fluidized bed dryer with heat exchanger pipe for corn material

This research aims to know the heat transfer process on the fluidized bed dryer for corn material. In this study conducted observations on the temperature and heat produced during the drying process, with three different pipe heat exchanger: spiral, parallel, and combination; The air of the air was 2 m/s, 4 m/s, and 6 m/s and the mass of corn material was1.5 kg with an initial moisture content of 24%. Test results showed that the highest-produced temperature in the combination heat exchanger pipe with a drying room temperature averaged 54°C. The value of the highest convection coefficient of heat transfer in the combination heat exchanger pipe flow treatment with the air velocity of 6 m/s by 29.4 W/m2K. The heat energy that enters at the treatment of combination heat exchanger pipe with the air speed of 6 m/s by 1774 Watts. Heat energy is lost through the highest wall drying chamber at the combination heat exchanger pipe flow treatment with the air velocity of 6 m/s by 409 Watts. The heat energy used is 335 Watts to dry the highest material in the combination heat exchanger pipe flow treatment with the air speed of 6 m/s.

Abnormal Uterine Bleeding in Adolescent

Abnormal uterine bleeding (AUB) is a frequent cause of visits to health care provider during adolescent period. Heavy menstrual bleeding is the most frequent clinical presentation of AUB. This condition particularly worrisome in this group not only when it occurs at menarche, but also anytime afterward when bleeding lasts longer than 7 days, blood loss is greater than 80 mL per cycle, or other warning signs that indicate a history of heavy bleeding such as anemia. Careful history and examination can help elucidate the best next steps for workup and management. The primary goal of treatment is prevention of hemodynamic instability. Therefore, assessing the severity and cause of bleeding is important. Therapeutic approach in the acute period should be established according to the degree of anemia and amount of flow. Treatment options for medical care of AUB generally include hormonal, nonhormonal and surgery. Additionally, long-term management with hormonal therapy in patients with severe uterine bleeding is known to be safe for developing HPO axis. Keyword: Abnormal uterine bleeding, adolescents, heavy menstrual bleeding

Performance Comparison of Vertical Flow Treatment Wetlands Planted with the Ornamental Plant Zantedeschia aethiopica Operated under Arid and Mediterranean Climate Conditions

This work compares the performance of vertical subsurface flow treatment wetlands (VSSF TWs) for wastewater treatment, planted with Zantedeschia aethiopica (Za), here operated simultaneously under two different climate conditions, arid and Mediterranean. The experimental setup was divided into two treatment lines for each climate condition: three VSSF TWs planted with Schoenplectus californicus (Sc) (VSSF-S), as the control, and three VSSF TWs planted with Zantedeschia aethiopica (Za) (VSSF-Z), as the experimental unit. The four treatment systems were operated at a hydraulic loading rate of 120 mm/d during spring and summer seasons, in two locations, Iquique (Atacama Desert, Chile) and Talca (Central Valley, Chile). The water quality in effluents, plant development, and water balance were used as performance measures. In terms of the water quality, the influents’ characteristics were similar in both climates and classified as “diluted”. For the effluents, in both climate conditions, average COD and TSS effluent concentrations were below 50 mg/L and 15 mg/L, respectively. In both climate conditions, average TN and TP effluent concentrations were below 40 mg/L and 2 mg/L, respectively. Furthermore, only total nitrogen (TN) and total phosphorus (TP) in effluents to VSSF-Z had a significant effect (p < 0.05) in relation to the climate condition. Regarding plant development, Za showed a lower height growth in both climate conditions, with arid consistently 0.3 m and Mediterranean decreasing from 0.6 m to 0.2 m. However, the physiological conditions of the leaves (measured by chlorophyll content) were not affected during operation time in both climates. Water balance showed that it was not influenced by the climate conditions or plant, with water loss differences below 5%. Therefore, taking into account the water quality and water balance results, Zantedeschia aethiopica can be used in VSSF TWs in a way similar to traditional plants under arid and Mediterranean climates. However, its use has to be carefully considered because lower height could affect the esthetics for its implementation in the VSSF TWs.

Collaborative Networking Towards Application-Aware Networking

Application-aware networking (AAN) is a framework in which applications can discover services offered by a network and explicitly signal their flow characteristics and requirements to the network. Such framework provides network nodes with knowledge of the application flow characteristics, which enables them to apply the correct flow treatment (e.g., bind the flow to a network slice, bind the flow to a service function chaining, set appropriate quality of service marking, invoke policing and shaping rules) and provide feedback to applications accordingly. This chapter describes how an application enabled collaborative networking framework contributes to solve the encountered problems. The chapter also describes recent proposals such as the PAN (path-aware networking) framework discussed within the IRTF and the APN (application-aware networking) framework that is meant to convey application identification and its network performance in-band.