scholarly journals THz Absorber for Breast Cancer Early Detection based on Graphene as Multi-layer Structure

Author(s):  
Mohammad Reza Soheilifar ◽  
Afrooz Rezazadeh

Abstract Today, the cost of treating cancer is very high, so early detection of cancer is essential, and one of the possible ways to diagnose cancer in the early stages is to use sensors that are made in the terahertz area. The proposed structure is a multilayer structure in which graphene is used in the upper and middle layer and the middle layer has a ribbon form. A disk form element is used in the upper layer. Finally, a ring is added to the structure. In the final structure of the ring, it actually inhibits the field, and this will increase the Q-factor at 6.7 THz. The interaction of layers on each other and their effect on reflection is studied to modify the final structure by variation of the chemical potential of the graphene layer in the range of 0.2 to 0.6 eV. Finally, the proposed absorber is used to discriminate cancer and healthy breast tissue. The effect of the thickness and distance of the tissue from the absorber are examined to realize the material effect on sensitivity and figure of merit (FOM) as two main factors for detecting the cancer tissue.

As electricity consumption is very high so using IOT ,reduction of electricity consumption is tried company nowadays but the use of it in extreme levels results as a damage to environment and personal financial conditions.Involving fields of application and Internet of things sensors are made. In this paper an architecture is introduced, that helps the smart cities to save resources for future. Consumption of electricity in a way is destroying the environment so this paper helps in saving the cost of electricity as well as saving the environment using wireless connections. Finally a new system is proposed keeping in mind the old one and its challenges. This system overcomes all the challenges and difficulties faced by the old one. To implement the framework electrical appliances such as lights, fans, ac etc are incorporated within the proposed system of reduction of electricity consumption


Author(s):  
Wijdani Anindya Hadi ◽  
Putu Dana Karningsih

Procurement is one of activity of government institution. ULP Bontang as a procurement unit is a part of Bappeda Bontang. Due to importance of procurement process, ULP Bontang needs to manage its risks by identifying, analyzing and controlling potential risk that may impedes ULP objectives. All goverment institution refer to a Internal Government Controlling System which called by Sistem Pengendalian Intern Pemerintah (SPIP) for conducting its risk management.  Since there are several part of SPIP is not applicable in ULP Bontang. Therefore in this research, SPIP is modified based on ISO 31000 framework. Moreover, Delphi method is utilized to identiry riks  involving five experts and established 23 potential risk in ULP Bontang. The modifications were also made in developing of severity and probability tables corresponding to the conditions of ULP Bontang. The formulation of mitigation recommendation concerned by very high potential risks. The mitigation for risk number (12) ULP Bontang office is not representative are securing ULP office using fingerprint device so only authorized personel allowed to enter the office. The cost required for this mitigation is about Rp 30.000.000 and Rp 32.000.000 for CCTV installation and evacuation route sign and also ULP needs to partnership with other institution to securing ULP Bontang member.Keyword : risk management, procurement, ISO 31000, Delphi Method, ULP Bontang


Author(s):  
Allan Hackshaw ◽  
Sarah S. Cohen ◽  
Heidi Reichert ◽  
Anuraag R. Kansal ◽  
Karen C. Chung ◽  
...  

Abstract Background Multi-cancer early detection (MCED) next-generation-sequencing blood tests represent a potential paradigm shift in screening. Methods We estimated the impact of screening in the US and UK. We used country-specific parameters for uptake, and test-specific sensitivity and false-positive rates for current screening: breast, colorectal, cervical and lung (US only) cancers. For the MCED test, we used cancer-specific sensitivities by stage. Outcomes included the true-positive:false-positive (TP:FP) ratio; and the cost of diagnostic investigations among screen positives, per cancer detected (Diagcost). Outcomes were estimated for recommended screening only, and then when giving the MCED test to anyone without cancer detected by current screening plus similarly aged adults ineligible for recommended screening. Results In the US, current screening detects an estimated 189,498 breast, cervical, colorectal and lung cancers. An MCED test with 25–100% uptake detects an additional 105,526–422,105 cancers (multiple types). The estimated TP:FP (Diagcost) was 1.43 ($89,042) with current screening but only 1:1.8 ($7060) using an MCED test. For the UK the corresponding estimates were 1:18 (£10,452) for current screening, and 1:1.6 (£2175) using an MCED test. Conclusions Adding an MCED blood test to recommended screening can potentially be an efficient strategy. Ongoing randomised studies are required for full efficacy and cost-effectiveness evaluations.


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