Design and Fabrication of Remote Operated Robot with Bomb Detection using MEMS Technology

The applications & advantages of remote controlled robots are plenty, especially in specific areas where people cannot go there to perform specific task, there these robots are playing major role. The system designed here can be used for picking any small object from the hazardous place. The same robot with little modifications can be used for many applications, as it is it can be used as spy Robot. The main advantage is that the Robot can be controlled from the safe zone through the remote monitoring designed using wireless video camera and MEMS. MEMS (Micro Electro Mechanical Sensor) is the device often used as position displacement sensor, the applications of MEMS are plenty and to prove the application practically this system is designed to control the robot as well as the robotic arm by changing the position of MEMS devices. The robotic arm designed here is having two degrees of freedom. The system designed with microcontroller unit functions according to the command signals generated and transmitted from the remote control unit by moving the MEMS. Based on this information the vehicle will be moved in all directions and the robotic arm is also controlled. This robot is equipped with a gripper mechanism at its front side for picking and placing of an object. In addition, the vehicle is also equipped with a metal detector for detecting the explosives (bombs). Whenever the bomb is detected, automatically the vehicle will be stopped and buzzer will be activated as an acknowledgement. This entire mechanism can be viewed in the television set at the control unit as the vehicle will be transmitting the live video signals through the wireless video camera

Anthelmintic Activity of Trikatu Churna and its Ingredients

The alcoholic extract of Trikatu churna and its ingredients were evaluated for anthelmintic activity. The dried fruits of Piper nigrum L. (Piperaceae), Piper longum L. (Piperaceae) and rhizome of Zingiber officinale Roscoe. (Zingiberaceae) were powdered and mixed together in equiproportions to get a polyherbal formulation, Trikatu churna. All these three ingredients are spicy, commonly used in our daily diet, also well known for their tremendous therapeutic potential, since from the Vedic period. The alcoholic extract of Trikatu churna and its ingredients were screened for preliminary phytochemical studies and also tested for anthelmintic activity against Pheritima posthuma and recorded the time taken for induction of paralysis and death. Piperazine citrate (10 mg/ml) was included as standard reference and distilled water as control. The results demonstrated that, the extracts of Trikatu churna and its plant ingredients showed the presence of alkaloids, flavonoids, tannins, lignins and steroids, these test samples were also exhibited potent anthelmintic activity, but the highest activity was noticed in Trikatu churna, this might be due to the multifunctional effect of all the three plant ingredients of Trikatu churna. Based on the above results, it is confirmed that, combination of Piper nigrum, Piper longum and Zingiber officinale in Trikatu churna offered promising anthelmintic effect than using the ingredients alone

Myxoid degeneration of leiomyoma-a masquerader

Uterine leiomyomas are one of the most common benign lesions in the uterus. The lesion can vary in size from a few millimetres to centimetres, location, its presentation and degeneration. They are easy to diagnose clinically with the help of available imaging techniques. Myxoid degeneration is an uncommon degeneration and has to be kept as a differential diagnosis as it mimics uterine sarcoma. Histopathology and Immunohistochemical analysis help in confirming the diagnosis. Here is a patient in reproductive age group who presented with rapidly growing abdominal mass in a span of 1 year with a prior surgical history of myomectomy. Pre-operative imaging was inconclusive for benign etiology and possibility of uterine leiomyosarcoma could not be ruled out. She was hence counselled for a laparotomy with a frozen section to prevent extensive surgery. Myxoid degeneration is not a common degeneration of leiomyoma with a reported incidence of 10% while the incidence of uterine leiomyosarcoma is less than 1% in reproductive age group. Even though rare, myxoid degeneration should be considered as a differential diagnosis of rapidly growing uterine mass with inconclusive pre-operative imaging

Thermal energy storage system using phase change materials: Constant heat source

The usage of phase change materials (PCM) to store the heat in the form of latent heat is increased, because large quantity of thermal energy is stored in smaller volumes. In the present experimental investigation paraffin and stearic acid are employed as PCMs in thermal energy storage (TES) system to store the heat as sensible and latent heat also. A constant heat source is used to supply heat transfer fluid (HTF) at constant temperature to the TES system. In the TES system PCMs are stored in the form of spherical capsules of 38 mm diameter made of high density poly ethylene (HDPE). The results of the investigation are related to the charging time and recovery of stored energy from the TES system

Crushing and Grinding : Practice and Problems in Kalyadi Copper Mine Concentrator

At Kalyadi concentrator plant the ROM ore is required to be reduced to 70% - 200 mesh size for liberation of valuable mineral. The metallic minerals that are mainly present in the ore are chalcopyrite, pyrite, magnetite and pyrrhotite the latter two being of minor occurance within quartzite. These minerals occur as disseminations, specks, particles, thin veinlets and concentrations. Ore is highly abrasive in nature with specfic gravity of 2.9. Ore grade varies from 0.5 to 0.8% Cu. giving an average grade of 0. 65% Cu

Impact of Innovations in Value Chain on Sorghum Farmers

The paper has studied the implementation of millets value chain pilot project under the NAIP to create demand for sorghum through diversification in farm production, procurement, ultimately aiming at economical benefits to both farmers and other stakeholders. This 4.5 years novel initiative is still in the mid-way. The study has reported that technological backstopping of sorghum cultivation with end-product specific improved cultivars has realized 51 per cent rise in incremental net income of Rs 16098/ha for the participating farmers (58 per cent rise in kharif and 44 per cent in rabi farmers). The inconvenience in the preparation of sorghum foods which has been the important reason for the decrease in its consumption, has been eliminated through development of convenient and ready-to-eat/cook foods. The factorization of the investment expenditure made per farmer (one acre of sorghum per participating farmer) has been worked out to be Rs 356 (equivalent of Rs 890/ha) in a season resulting in 51 per cent rise in incremental net income over baseline which is slightly higher in kharif sorghum than in rabi sorghum. The output pricing in kharif has helped in attaining these benefits. However, the benefit-cost ratio has worked out in favour of rabi sorghum farmers, i.e. 1:7.5 vis-à-vis kharif farmers BC ratio of 1: 4.2. The study has observed that linking up of the entire stakeholders through value addition throughout the value chain system would renew and uplift the diminishing sorghum area and production and its ultimate economical benefits to farmers and other stakeholders in the value chain.Agricultural and Food Policy,

Propfan Test Assessment (PTA): Flight test report

The Propfan Test Assessment (PTA) aircraft was flown to obtain glade stress and noise data for a 2.74m (9 ft.) diameter single rotation propfan. Tests were performed at Mach numbers to 0.85 and altitudes to 12,192m (40,000 ft.). The propfan was well-behaved structurally over the entire flight envelope, demonstrating that the blade design technology was completely adequate. Noise data were characterized by strong signals at blade passage frequency and up to 10 harmonics. Cabin noise was not so high as to preclude attainment of comfortable levels with suitable wall treatment. Community noise was not excessive