Damandeep Singh - Academia.edu (original) (raw)

Papers by Damandeep Singh

Indian Journal of Horticulture, 2014

The response of ‘Patharnakh’ pear to girdling was evaluated on 18-year-old vigorous trees growing... more The response of ‘Patharnakh’ pear to girdling was evaluated on 18-year-old vigorous trees growing under uniform cultural practices. The fruits with best quality characteristics in terms of juice content (58.5%), total soluble solids (11.8°Brix), TSS/acid ratio (42.8) and total sugars (8.86%) with low juice acid (0.27%) contents were observed under sub-limb girdling performed on 15 days after flower initiation (DAFI). Girdling treatments also advanced the fruit maturity over control. In conclusion, sub-limb girdling performed on 15 DAFI was the best in enhancing fruit yield (162.0 kg/tree) compared to control (135.3 kg/tree) and physico-chemical composition of ‘Patharnakh’ pear under sub-tropics of north India.

Banana is preferably grown under tropical condition where it is well adopted to tropical climate ... more Banana is preferably grown under tropical condition where it is well adopted to tropical climate in the warm and humid parts of Asia. A temperature range of 20-35C is ideal for better banana production and the growth of banana is retarded at temperature below 20C and above 35C. In Punjab, banana cultivation is restricted to certain area due to frost injury and adverse climatic conditions during winter seasons and the yield is adversely affected and most of the time whole crop remain damaged. Prolonged prevalence of low temperature during winter prevents the emergence of inflorescence through the pseudostem top due to rosetting of inflorescence. Under such conditions protected cultivation of banana has been advocated. The present review is an emphasis over the feasibility of protected cultivation of banana in comparison to other fruit crops.

Indian Journal of Horticulture, 2010

The present study was conducted to investigate the impact of poplar inter-cropping on pre- bearin... more The present study was conducted to investigate the impact of poplar inter-cropping on pre- bearing behaviour of four fruit crops namely, peach, Kinnow, plum and guava. Per cent increment for stock diameter and height was observed in Kinnow and for scion it was in plum inter-cultivated with poplar. There was no significant effect of poplar canopy on growth of fruit trees, except in guava where height and tree spread were significantly higher. Photosynthesis rate was higher in the shade than in the open was maximum recorded in the guava (7.57 μmol m−2s−1) and minimum in Kinnow (3.04 μmol m−2s−1).The rate of photosynthesis was more during morning hours and least during afternoon in all the fruit crops.

In contrast to all existing ASD soft-decision decoding concepts for RS codes, only low-complexity... more In contrast to all existing ASD soft-decision decoding concepts for RS codes, only low-complexity chase algorithm can attain improved tradeoff in performance-complexity with significant coding gain on HDD with polynomial complexity. LCC decoding scheme utilized 2 η test vectors having less computational complexity in addition to enhanced coding gain. Instead of short RS codes, LCC decoding is required to interpolate bulk of test vectors which results in long latency. Therefore, interpolations as well as polynomial selection are hefty part of LCC decoder with long RS code and significant value of η. Besides, innovative designs being developed to alter the interpolation and polynomial complexity for the efficient recovery of the codeword for the given test vectors in LCC decoding. So, toward the codeword recovery for an RS (n, k) code erasure decoding, Neilson algorithm, coordinate transformation etc. being applied on the RS code segment. Also Chine search method can be applied over t...

European Journal of Pharmacology

SSRN Electronic Journal

As the client is larger a large number of details are made daily in the field of telecommunicatio... more As the client is larger a large number of details are made daily in the field of telecommunications. Decision makers and business analysts say it is way more extravagant to make new customers than to keep existing customers, so it is very important for customer relations hip management analysts to know the reason for aggressive customers and behavioral patterns in deceptive customer data. It leads to the salvation of big business regardless of size. This paper proposes a predictive mode l of churn that will begin its operation by clearing the data initially. As it is very important to have information that is not uncommon it therefore leads to accurate predictions. It uses classification and integration techniques to identify targeted customers and provides the factors that lea d to customer withdrawal in the communications sector. An engineering project will then be conducted to determine which feature plays a key role in the forecast. Feature selection is made using the benefit information and the qualification rating filter. By recognizing key churn values from customer data, CRM can increase productivity, recommend appropriate promotions to a group of potential customers based on similar behavioral patterns, and radically improve the company's marketing campaigns. The outcome of the model will provide relevant information that will be of great benefit to the sector.

International Journal of Structural and Civil Engineering Research

Over the past decades concrete technology has entered the broad areas of research to enhance the ... more Over the past decades concrete technology has entered the broad areas of research to enhance the properties and performance of concrete. Moreover there is the introduction of the new types of concrete such as selfcompacting concrete (SCC), high strength concrete (HSC) or ultra-high strength concrete (UHSC). Now these types of concrete are being widely used in the world and they require the high cement binder. So high cement content means high loss to environment as in the manufacturing of one tonne of cement, about 1 tonne of CO2 is emitted. So it is necessary to reduce usage of cement by introducing new supplementary cementitious materials which are the byproducts of industries to reduce debris. Rice Husk Ash is one of these. The potential of rice husk ash as a cement replacement or addition material is well established. A review of literature urges the need for optimizing the replacement level or additionof RHA in concrete for improved compressive strength at optimum water binder ratio. This paper discusses the improved compressive strength of RHA-High strength concrete at optimized conditions.

Journal of Radioanalytical and Nuclear Chemistry

In the present study, residence time distribution measurements were carried out in an industrial-... more In the present study, residence time distribution measurements were carried out in an industrial-scale ethyl acetate reactors using Bromine-82 as radiotracer. The process fluid is re-circulated into the reactor at a high flow instead of mechanical agitation inside the reactor to facilitate the mixing. The objective of the study was to measure the effect of recirculation rate on the mean residence time and flow pattern process of material in the reactor. The results showed that recirculation significantly affects the flow characteristics and mean residence time of the reactors. A bypass stream and stagnant fluid zones present in the system and their fraction affected by recirculation in both the reactors.

Chemical Engineering Communications

Abstract A finishing reactive distillation (RD) column (50 stage), used for enhanced ethanol conv... more Abstract A finishing reactive distillation (RD) column (50 stage), used for enhanced ethanol conversion, in an ethyl acetate production plant was simulated. This RD column followed a pre-reactor, wherein, homogeneously catalyzed esterification reaction for the production of ethyl acetate using acetic acid and ethanol was carried out. The simulation results of the RD column using equilibrium and rate-based models are compared with the plant data. The column design data for tray holdup, required for the rate-based model, was used. Effects of some design and operation parameters of the simulation results are also discussed.

International Journal of Science and Research (IJSR)

Content Base image retrieval system is branch that uses for retrieval of different images on the ... more Content Base image retrieval system is branch that uses for retrieval of different images on the basis of contents. Contents may be various attributes available in the images. A number of algorithms had been used for the purpose of content base Image retrieval. In this paper various approaches has been discussed that can be used for content base Image retrieval system. In this paper color base, energy based, shape and texture features extraction approaches has been discussed. These different approaches can be used for development of content base image retrieval system.

Applied Radiation and Isotopes

Indian Journal of Horticulture, 2016

A study was conducted with the objective to improve fruit quality in semi-soft pear and find out ... more A study was conducted with the objective to improve fruit quality in semi-soft pear and find out the plant part and stage of growth for girdling. In semi-soft pear cultivar Punjab Beauty under sub-tropics of northern India, considerable increase in fruit retention, fruit productivity, fruit weight, size and colour coordinates was noted with girdling treatments, viz., trunk girdling (TG), limb girdling (LG) and sub-limb girdling (SLG) applied at flower initiation (FI), 15 days after flower initiation (15 DAFI) and 30 days after flower initiation (30 DAFI) over control. The fruits with best quality attributes in terms of juice, soluble solids content, SSC/TA ratio, total sugars and low titratable acidity were observed under limb girling performed at 15 DAFI. Girdling treatments also significantly advanced the physiological fruit maturity over the untreated tree.

Indian Journal of Horticulture, 2015

The response of hard and semi-soft pear cultivars Patharnakh and Punjab Beauty, respectively to g... more The response of hard and semi-soft pear cultivars Patharnakh and Punjab Beauty, respectively to girdling was evaluated on 18-year-old vigorous plants growing under uniform cultural practices. Girdling was practiced on trunk (TG), limb (LG) and sub-limb (SLG) during flower initiation (FI), 15 days after flower initiation (15 DAFI) and 30 days after flower initiation (30 DAFI). Foliar leaf nitrogen and potassium levels in both the cultivars were significantly reduced with girdling treatments. However, foliar calcium level was significantly enhanced up to 3.93% in Patharnakh and 3.62% in Punjab Beauty, whereas, phosphorus and magnesium levels were not significantly influenced with girdling in both the cultivars. Among micro-nutrients; iron, zinc and copper contents were recorded significantly higher in girdled trees, however, manganese content was reduced significantly in both the cultivars.

Indian journal of orthopaedics, 2014

The use of minimally invasive surgical (MIS) techniques represents the most recent modification o... more The use of minimally invasive surgical (MIS) techniques represents the most recent modification of methods used to achieve lumbar interbody fusion. The advantages of minimally invasive spinal instrumentation techniques are less soft tissue injury, reduced blood loss, less postoperative pain and shorter hospital stay while achieving clinical outcomes comparable with equivalent open procedure. The aim was to study the clinicoradiological outcome of minimally invasive transforaminal lumbar interbody fusion. This prospective study was conducted on 23 patients, 17 females and 6 males, who underwent MIS-transforaminal lumbar interbody fusion (TLIF) followed up for a mean 15 months. The subjects were evaluated for clinical and radiological outcome who were manifested by back pain alone (n = 4) or back pain with leg pain (n = 19) associated with a primary diagnosis of degenerative spondylolisthesis, massive disc herniation, lumbar stenosis, recurrent disc herniation or degenerative disc dis...

Indian Journal of Orthopaedics, 2014

Industrial & Engineering Chemistry Research, 2014

ABSTRACT Ethyl acetate (EtAc) is normally produced via the liquid-phase reversible reaction of ac... more ABSTRACT Ethyl acetate (EtAc) is normally produced via the liquid-phase reversible reaction of acetic acid (HAc) with ethanol (EtOH) in the presence of acid catalyst, para-toluenesulfonic acid (PTSA). In the reactive distillation (RD) units, ethanol and acetic acid is partially reacted in a prereactor, and the rest of the reaction continues in the RD column to a greater extent due to removal of products (EtAc and water) from the liquid phase, leading to elimination of the backward reaction. Due to the importance of the RD in esterification reaction, concerted investigations by many workers on widely different topics such as thermodynamic, reaction kinetics, and simulation pertaining to RD have been carried out. However, most of the information/analysis is based on laboratory scale and pilot plant scale data. No data/studies are available in open literature based on large scale plants. Due to this, present work is aimed at obtaining detailed sampling and analysis of process parameters using an industrial RD unit of 60 TPD capacity of IOLCP situated at Barnala, Punjab, India, who very kindly allowed us to use and publish relevant data. ADDITIONAL INFORMATION: A 20 m high reactive distillation column with 48 trays (50 stages) was studied at two reflux flow rates 13000 and 13700 kg/h. Other features of the column include: Internal diameter: 1.8 m Number of bubble cap trays: 48 Number of bubble caps on a tray: 77 Tray Holdup: 112.7 liter Feed to the column on 38th Tray (i.e, 39th Stage): 24200 kg/h Top Temperature: 74 °C Bottom Temperature: 117 °C Column Pressure: 0.2−0.35 kg/cm2 (Gauge) FIRST 50 FULL PAPER available at: http://pubs.acs.org/articlesonrequest/AOR-EbNXqfd5aaFHxdvFSs4x

Computers & Chemical Engineering, 2015

ABSTRACT Most of the reactive distillation (RD) simulation studies rely upon very scarce laborato... more ABSTRACT Most of the reactive distillation (RD) simulation studies rely upon very scarce laboratory scale experimental data available in literature. In the present work, an industrial scale RD finishing column for ethylacetate production is simulated using rate based model of Aspen Plus(TM). Available activity coefficient data could not predict composition profiles of the industrial column. Therefore, a new set of NRTL model-parameters is established for this system using the vapor–liquid equilibrium data available in literature.This new set of data was used in the non-equilibrium, rate based model of Aspen Plus(TM). Baring the variation in concentration profile due to fluctuations caused by pseudo-steady-state behavior of industrial unit, the predicted concentration profile closely matches the plant data. The simulation results for stage efficiency, component generation rates, and the effect of the organic reflux rate on ethanol conversion and ethyl acetate purity are also presented and discussed.

JAPI, 2012

Introduction finger clubbing, regarded as the oldest clinical sign of medicine, was first describ... more Introduction finger clubbing, regarded as the oldest clinical sign of medicine, was first described by Hippocrates more than 2500 years ago. It has many well known causes including malignant neoplasms, wherein it arises as a distant epiphenomenon. 1, 2 We ...

Molecular Crystals and …, 1981

With a view to elucidate the chemistry of binary and ternary organic eutectics, we measured phase... more With a view to elucidate the chemistry of binary and ternary organic eutectics, we measured phase diagrams, undercooling and linear velocity of crystallization of molten mixtures of α naphthol-m aminophenol, α naphthol-phenathrene, β naphthol-...