Search or add a thesis

Advanced Search (Beta)
Home > Acoustic Zoning Mapping and Prediction Modeling of Urban Zones of Peshawar

Acoustic Zoning Mapping and Prediction Modeling of Urban Zones of Peshawar

Thesis Info

Access Option

External Link

Author

Nazneen, Shahla

Program

PhD

Institute

University of Peshawar

City

Peshawar

Province

KPK

Country

Pakistan

Thesis Completing Year

2017

Thesis Completion Status

Completed

Subject

Environmental Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/13008/1/Shahla_Nazneen_Envir_Science_2017_HSR_UoP_Peshawar_17.01.2018.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676724453015

Similar


Noise is a well-known source of pollution in urban areas and recognized as one of the main and significant environmental problems and considered as the most pervasive hazardous pollution. It has detrimental effects on the health of people and becoming imposition upon human health and unjustifiable interference in the comfort and quality of modern life. Peshawar is one such area, located at the north-west of Pakistan that is experiencing high noise levels due to structural changes, extension of road networks, incessant increase in the number of vehicles and unbalanced urban development at both ends of the city. In order to check the severity of the mentioned issue, this study was carried out to quantify the noise pollution levels, effects on the health of the exposed population and effectiveness of the legislation to deal with it. The 24h acoustic survey was conducted with the Extech’s Datalogging Sound Level Meter at residential, commercial and silence zone and results were compared with the Pak-NEQS (2010) for noise. From the collected data different noise descriptors such as Leq, L1, L10, L50, L90, L99, LNP, NC, NEI and TNI both for day and nighttime were computed for all zones. Noise levels were measured at 30 residential locations, 23 commercial locations and 6 silence zone of the study area. The highest values of Leq dB (A) for daytime and nighttime for residential areas were recorded as 77.9 dB (A) and 70.9 dB (A), respectively. Similarly, for commercial areas the highest Leq for daytime was recorded as 87.2 dB (A) and for nighttime was recorded as 70.7 dB (A). Highest and lowest Leq dB (A) recorded at silence zone for daytime and nighttime were 72.3 dB (A) and 64.1 dB (A), respectively. The result showed that 90 % of residential sites, both for daytime and nighttime, 91% of commercial locations for daytime, 87% of commercial locations for nighttime, 100% silence zone for daytime and 83% for nighttime showed the values of Leq dB (A), beyond the permissible limit set out by NEQS-Pak (2010). The results of the noise indices for commercial and residential areas showed that noise fluctuates broadly and extreme fluctuations was encountered for 50% locations where, Leq values exceeded L90 by 10 dB(A) and same results were also witnessed for nighttime. However, for silence zone noise fluctuations were very little. The hourly Leq and noise indices for all residential, commercial and silence zone showed that Leq values were close to L10 values, which showed that fluctuations were broad and only at few locations extreme and little fluctuations were observed. Values of LNP and NC showed that fluctuations were high in commercial areas followed by residential and then silence zone both for day and nighttime. . Similarly, the NEI calculated for all the areas showed that maximum sites showed a value greater than 1. Similarly, high values of TNI were also recorded for all areas. Comparing Leq between different times of the day for commercial, residential and silence zones using ANOVA and Tukey statistical test at P<0.05 level a significance difference has been reported between different hours during daytime. Pearson correlation was performed and a strong positive correlation was found between Leq and L10, L50 Leq, L90, L1, L99, Max and Min noise levels for all zones. Significant effects of areas on the values of Ld, L10, L50, LNP were observed. Post hoc comparisons for Ld, L10, L50 and NC using the Tukey HSD test indicated that the mean score for the commercial areas during daytime for Ld was significantly different than residential areas but for nighttime no significant difference was found for all noise indices for any other area. From the collected data noise maps were also generated for daytime and nighttime using ArcGIS 9.3. Different acoustic zones were identified in the project area and the acoustic classification of the study area was used to classify the territory into six zones depending on the activities taking place in the areas. The HUD classification was used to identify the areas falling under different zones. The map showed that most of the areas fell under the normally unacceptable zone for daytime and normally acceptable zone for nighttime. A representative sample of population was interviewed using a questionnaire survey technique. Stakeholders such as policemen, shopkeepers, students, and drivers were selected as a target community. The results were analyzed through SEM and it indicates that exposure to noise for longer duration may cause headache, exhaustion, frustration and anxiety. However, person sensitive to noise may also experience difficulty in understanding speech and night awakenings in addition to the above mentioned diseases. These problems give rise to secondary issues like dizziness and ringing in ears. It is concluded that noise levels were quite high in urban zones of Peshawar owing to number of problems. One such problem is the lack of proper and comprehensive legislations for noise. Based on the data collected, a model to predict equivalent noise levels was proposed using SPSS version 18. For the development of the multiple linear regression model, the parameters used were two wheelers, three wheelers, four wheelers, van/Suzuki, bus/truck, carts and road width. A very low percentage of error for the data was exhibited by the proposed model. The main factor responsible for high noise levels was found to be traffic and its intensity. Ill planned fast growing traffic especially 3 wheelers and 2 wheelers were the main sources of traffic noise. In order to reduce the ill-effects of noise on the urban residents of Peshawar concrete actions from all the relevant agencies are needed to address the growing problem of noise pollution.
Loading...
Loading...

Similar Books

Loading...

Similar Chapters

Loading...

Similar News

Loading...

Similar Articles

Loading...

Similar Article Headings

Loading...

اظہارِ تشکر

اظہارِ تشکر

حمد و ثنا ہے اُس خالقِ لم یزل ولا یزال کے لیے جو لائقِ تسبیح و تمجید ہے۔جس نے اپنی قدرتِ کاملہ سے ذرے کو آفتاب،قطرے کو قلزم  اور عظیم آسمان کے شامیانے کو بغیر کسی سہارے کے نصب فرمایا۔جس کا کمال اس کی معرفت ہے اور جس کا شاہ کار "لولاکِ لما خلقت الافلاک" کا مصداق ہے۔لاتعداد درود و سلام اُس ہادی برحق معلمِ قدس ،سید الانبیاء  حضرت محمد مصطفیٰ  صلی اللہُ علیہ وآلہ ٖ وسلم کی ذاتِ مقدسہ و مطہرہ پر۔اور لاکھوں درود و سلام صاحبانِ کساء ،اہلبیتِ اطہار ؑ اور اصحابِ باوفا رضوان اللہ علیھم اجمعین کی ذواتِ پاکیزہ پر۔

یہ مقالہ میری زندگی کی اولین تحقیقی کاوش اور میری زندگی کے خوابوں  کی ادنی سی تعبیر ہے۔جس کے لیے میں نے ان تھک محنت کی۔ الحمد للہ میری اس کاوش کو خدائے بزرگ  و برتر نے  تکمیل  تک پہنچانے میں میری مدد فرمائی۔

       میں شکر گزار ہوں اپنے عظیم والدین کا جن کی بے پناہ محبتوں اور شفقتوں کے سبب میں ا س قابل بنا۔ جنہوں نے زندگی میں ہر گاہ رہنمائی فرمائی اور اپنی دعاؤں کے سائے میں پروان چڑھایا۔میرے والدِ بزرگ وارسید محمد حسین شاہ صاحب  کو تعلیم سے بے پناہ محبت ہے۔اُن کی زندگی کی یہ خواہش رہی ہے کہ ہمیں بہترین انداز میں زیورِ تعلیم سے آراستہ فرمائیں۔آج میں فخر محسوس کر رہا ہوں کہ ان کے خواب کو تکمیل تک پہنچانے میں خدا نے میری مدد فرمائی۔خدا میرے والدین کو سلامت رکھے اور ان کی محبتوں کا ابر ِ رحمت ہمیشہ برستا رہے۔

میں اپنے محسن و مشفق استاد نگرانِ مقالہ پروفیسر ڈاکٹر سید اشفاق حسین بخاری کا شکر گزار ہوں جن کے علمی سایہ عاطفت میں یہ تحقیق  مکمل کی ۔اچھی...

الأصول الجامعة بين كبرى الفرق الإسلامية

The Muslim nation shows great diversity in many ways: Ethnical, lingual, tribal, racial, colour, cultural, etc. Nevertheless, such differences have never been supposed to impede their way to their unity. The Muslim nation has far more reasons and mutual foundations to be united. But unfortunately, the Muslim history witnesses squabbles and skirmishes between different sects of this otherwise one Ummah. These disputes led us to the recesses of ignorance and intolerance, which in turn left us lagging behind the world and advancement, and now, we are called the third world, which is not an honour any way. We need to work on the similarities between different sects of the Muslim nation and let them learn how to live together keeping their differences. So that they may get united. All the Muslims sects fundamentally believe in the same set of beliefs, practices, and rituals. The differences in these areas are the differences of diversity and extensions, not of contradiction. This diversity is the beauty of deliberation and discussion, hence a reason for knowledge to grow, it should not be a matter of contentions. We need to highlight the mutual common grounds of Islamic beliefs and religiosity among the sects to unite this nation. We need to teach how to tolerate and respect each other with difference of opinions. We should encourage constructive dialogues between the Muslims sects and let them understand point of views of each other and thus remove the misconception about; each other. We should curb the contentious and discordant voices and build up an atmosphere where a healthy, tolerant and heterogeneous society may emerge and pave the way to Muslim unity and thence to success in this life and the life to come after death. In this perspective, the author of his present study explores to find the teachings and guidance of Islam. This is the theme of the present study.

Effect of Dietary Inclusion of Sodium Bicarbonate on Production Performance, Nutrient Digestibility and Blood Profile of Caged Layers During Summer

The intent of this study was to investigate the effect of dietary inclusion of NaHCO3 on production performance, nutrient digestibility and blood profile of caged layers during summer. One hundred sixty commercial layers of 24 weeks old were bought from a commercial layer farm and were raised in a group for one week i.e. adaptation period. At the beginning of 26th week of age, these layers were further divided into 20 experimental units/replicates (8 layers/replicate). These 20 replicates/units were further allotted/distributed to five treatment groups (4 replicate/treatment). All the birds were offered diets containing 17% CP and 2700 Kcal/Kg ME with or without supplementation of NaHCO3 for a period of twelve weeks. Group A served as control, which was provided layer ration without any supplementation, while group B, C, D, and E were offered ration supplemented with 0.5, 1, 1.5 and 2% sodium bicarbonate, respectively. All the diets were iso-nitrogenous (having same protein contents, CP, 17%) and iso-caloric (having same energy level, ME, 2700 Kcal/Kg). these diets were fed to the experimental birds ad libitum, for 12 weeks (26-37 weeks of age). Data on feed consumption, number of eggs produced, egg weight and egg mass laid by the birds were recorded. These data were used for the calculation of feed conversion ratios (FCR) on the basis of per dozen eggs and FCR on the basis of per kg egg mass produced. Five eggs from each replicate were checked weekly for their shell thickness (ST), yolk index (YI), albumen index (AI), Haugh unit (HU) score, yolk pH, albumen pH, specific gravity (SG) and yolk cholesterol. Results revealed that dietary inclusion of sodium bicarbonate significantly (P<0.05) increased feed consumption, weight gain, feed efficiency, egg production, egg weight, egg shell thickness, specific gravity, albumen height, Haugh unit, yolk height and yolk diameter of eggs produced by the birds. Yolk cholesterol was found to be minimum in the eggs laid by the birds fed rations containing 1% NaHCO3 (group C). Whilst pH of yolk, egg albumen and Serum uric acid concentration were found to be higher in group E. Dietary inclusion of sodium bicarbonate significantly (P<0.05) decreased the rectal temperature and respiration rate of layers, whilst it increased the water intake of the birds significantly (P<0.05). Blood samples were collected from two birds selected randomly from each replicate 10 days post vaccination of 1st, 2nd, and 3rd vaccination to check antibody titer against ND virus. Blood samples were collected from two birds from each replicate at the last day of 37th week for the analysis of blood profile. Serum glucose, white blood cells count, serum urea, plasma chlorides, serum cortisol and serum glutamic-oxaloacetic transaminase concentration were (SGOT) found to be significantly (P<0.05) higher in control group, whereas, blood hemoglobin concentration, red blood cells count, plasma sodium, potassium, bicarbonate, serum total protein and serum albumen concentration were found to be significantly (P<0.05) higher in birds of group C. However, yolk index, packed cell volume, erythrocyte sedimentation rate, serum creatinine, alkaline phosphatase, plasma calcium, plasma phosphorus, serum globulin and serum glutamic pyruvate transaminase concentration were not affected significantly (P>0.05) due to the dietary treatments. Serum cholesterol, triglycerides and low density lipo-proteincon centration were significantly (P<0.05) decreased, whereas, serum high density lipo-protein concentration was found to be significantly (P<0.05) increased by dietary inclusion of sodium bicarbonate. Birds of group C showed maximum concentration of estrogen, progesterone, T3, T4 and antibody titer against Newcastle disease. For digestibility trial thirty layers having similar body weight were obtained from the same batch which was used for the performance trial. These birds were maintained in individual metabolic cages and were randomly allotted to five experimental diets (same as in performance trial) in such a way that each ration was offered to 6 layer birds and each bird served as a replicate. Feces samples were collected at the end of 38th week of age for two days at the time interval of three hours. Results revealed that digestibility of dry matter , protein, ether extract and crude fiber as well as mineral absorption was found to be better in the birds fed diets containing 1% sodium bicarbonate.