Quantum-Enhanced Parameter Estimation Without Entanglement

Entanglement is generally considered necessary for achieving the Heisenberg limit in quantum metrology. We construct analogues of Dicke and GHZ states on a single $N+1$ dimensional qudit that achieve precision equivalent to symmetrically entangled states on $N$ qubits, showing that entanglement is not necessary for going beyond the standard quantum limit. We define a measure of non-classicality based on quantum Fisher information and estimate the achievable precision, suggesting a close relationship between non-classical states and metrological power of qudits. Our work offers an exponential reduction in the physical resources required for quantum-enhanced parameter estimation, making it accessible on any quantum system with a high-dimensional Hilbert space.Comment: 7 pages, 2 figure

Performance Analysis of Full Adder Circuits Using CMOS 90nm Technology

This paper represents designing of full adder circuit using CMOS 90nm technology. In this paper three full adder circuits have been proposed using 28 and 36 transistors and comparison analysis is done between 28T(a),28T(b) and 36T on the basis of area, power and number of transistors. By comparison it shows that proposed 28T(b) full adder circuit is better than 28T(a) and 36T full adder circuits as it required power less than other two circuits

Study and Preparation of High Alumina Insulating Castables

Refractories are non-metallic inorganic materials. It can withstand high-temperature, load. It has many applications in glass, cement lime, iron and steel industries. Hence, unshaped refractories have taken the place of shaped ones. Castables are used in many areas. Refractory castables are prepared by mixing refractory grains, bonding agents, matrix components and additives by casting. We focused here on the study and preparation of insulating castables. Insulating castables have many applications in petrochemical industries and in process industries where it is used as a backup layer. It has a very low density as well as low thermal conductivity that is why it is used in petrochemical and process industries to conserve heat energy and reduce fuel cost. Insulating castables are very brittle in nature, as it is made up of highly porous aggregates. Hence, it requires high water addition. To improve its strength, a slow vibration of 1.1 is done to reduce its high water requirement. The numerous size range of the aggregates was used to make it more homogeneous. Cement is used as a binder in the preparation of this castables

Preterm labour and its effect on perinatal morbidity and mortality

Background: This study was performed to find out the incidence and identification of risk factors of preterm labour and also to find out the incidence of perinatal outcome in the form of morbidity and mortality.Methods: Total 720 antenatal cases with preterm labour admitted and studied in total one-year duration in UPUMS Saifai, Etawah. Out of 720 cases, 692 pregnant patients underwent preterm birth. Thorough history taking, general, systemic and obstetrical examination was done for each patient. APGAR Score and birth weights of the new borns were noted at the time of birth and they were followed up throughout the hospital stay. Incidence and perinatal morbidity and mortality of preterm births were calculated.Results: Incidence of preterm labour and births were 28.5% and 27.9% respectively. Among various causes of pre-term birth, spontaneous labour with intact membranes is the most common cause. Lack of antenatal check-up was found to be most common risk factor of preterm labour followed by infection and low socioeconomic status. Majority of the new-borns had low APGAR score (<6) in the present study. Total perinatal morbidity in the present study group was 67.2%Conclusions: We concluded that higher incidence of perinatal morbidity and mortality may be due to that the study was conducted at tertiary health care hospital which mostly receive high risk cases and majority of cases belonged to low socioeconomic group and also that the incidence of perinatal morbidity and mortality may be more in this part of country

A generalization of fixed point results in complex–valued quasi–partial b–metric space

The aim of this paper is to establish and prove several results on fixed point portrayed in complex valued metric spaces i.e. to bring in a new type of extended bmetric space, which we call complex–valued quasi–partial b–metric space by considering an adequate partial order in the complex field and partial b–metric functions. Within this paper, fixed point results are obtained in complex–valued quasi–partial b–metric space. To substantiate the authenticity of our results and to distinguish them from existing ones, some illustrative examples are also furnished with graphs.Publisher's Versio

Uterine cavity evaluation in infertile patients with transvaginal sonography, saline infusion sonography and hysteroscopy

Background: To compare diagnostic accuracy of Transvaginal sonography (TVS), Saline infusion sonography (SIS) and hysteroscopy in infertile women.Methods: In a prospective study, 250 women with complaint of infertility underwent TVS and SIS. Diagnostic and operative hysteroscopy under general anaesthesia was then performed.Results: Hysteroscopy with directed biopsy was considered as the gold standard. Endometrial polyp (n=25, 10%), submucosal fibroid (n=12, 4.8%), suspected intrauterine adhesions (n=4, 1.6%) and congenital uterine anamoly (n=2, 0.8%) were detected with TVS. In the evaluation with SIS results Endometrial polyp (n=34, 13.6%), submucosal fibroid (n=20, 18.1%), suspected intrauterine adhesions (n=5, 2%) and congenital uterine anamoly (3, 1.2%). Hysteroscopy results detected Endometrial polyp (n=32, 12.8%), submucosal fibroid (n=19, 7.6%), suspected intrauterine adhesions (n=8, 3.2%) and congenital uterine anamoly (n=5, 2%).Conclusions: TVS is the primary investigative method for evaluating every infertile couple by means of uterine cavity and ovaries. Hysteroscopy is superior to SIS in diagnosis of intracavitatory abnormalities. However SIS has the advantage of being noninvasive, cheap, affordable, short duration and accurate method for uterine cavity evaluation

Area Efficient, Low Power 4:1 Multiplexer using NMOS 45nm Technology

The field of electronics is trending with miniaturization and reduction in the threshold voltage. In this paper, we dealt with the efficient use of die area and optimum usage of power. This paper shows the contrast between “conventional MUX” and “MUX using NMOS transistors” and accentuates the advantages of the latter. The conventional 4:1 MUX consisted of a total of four AND gates and few inverters which made it occupy more die area but in this paper we have presented the design of 4:1 MUX which occupies less area on the die. Multiplexer is a device which works on the principle of MISO (Multiple Input Single Output)

Acute intermittent porphyria and pregnancy: an obstetric challenge

Acute intermittent porphyria is a rare autosomal dominant disease caused by a mutation in the gene coding for the porphobillinogen deaminase enzymes in heam biosynthesis. The disease manifests as acute attacks of neuropsychiatric dysfunction and neurovisceral manifestations presenting as acute abdomen. In pregnancy, 54% patient has exacerbation of attacks in the form of seizures and acute abdomen occurs due to hormonal changes. Prevalence of acute intermittent porphyria is 1-2/200000 in general. Here we report a case of 36 year old women, G4P1L2A2 presenting at 10+4 weeks of gestation requesting pregnancy termination. Patient was diagnosed as case of acute intermittent porphyria with porphyic polyneuropathy 6 months back. At that time her main symptoms were acute pain abdomen with numbness and weakness in all four limbs. Her urinary porphobillinogen and 5 ALA raised. Her CECT of brain and nerve conduction studies were normal. Since then she is on Tablet Gabapentin 300 mg H.S. She underwent successful pregnancy termination by suction and evacuation under spinal anesthesia and she refused for copper-T insertion. Only safe drugs were used for procedure and she was discharged with advice of barrier contraception

Study of thermally induced vibration of non-homogeneous trapezoidal plate with varying thickness and density’,

Abstract The goal of present investigation is to study the effect of thermal gradient on the vibrations of non-homogeneous trapezoidal plate whose thickness varies parabolically and density varies linearly. Effect o f other plate parameters such as non-homogeneity constant, taper constant and aspect ratios have also been studied. C-S-C-S boundary condition with two term deflection is taken into consideration. Rayleigh-Ritz method is used to find the solution of the problem. Results are calculated with great accuracy and presented in tabular form. Co mparison of the results with published data has also shown