<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[APSEd]]></title><description><![CDATA[APSEd]]></description><link>https://www.apsed.in/blog</link><generator>RSS for Node</generator><lastBuildDate>Mon, 20 Jul 2026 08:11:40 GMT</lastBuildDate><atom:link href="https://www.apsed.in/blog-feed.xml" rel="self" type="application/rss+xml"/><item><title><![CDATA[How Does Air Pollution Affect Visibility? The Science of Haze, Light Scattering, and AQI]]></title><description><![CDATA[Why does smoggy air look brown or hazy? Learn how air pollutants reduce visibility through light scattering and absorption, how the Coefficient of Haze (COH) is measured, and how visibility feeds into the Air Pollution Index.]]></description><link>https://www.apsed.in/post/how-air-pollution-affects-visibility-haze-light-scattering</link><guid isPermaLink="false">69c0b311f68fa4c22fbd6488</guid><category><![CDATA[Air Pollution]]></category><category><![CDATA[Environmental Science]]></category><pubDate>Mon, 23 Mar 2026 03:34:32 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/c98da3_cfbedce0b5de4e41a27247c739533b0c~mv2.jpg/v1/fit/w_1000,h_739,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[National Ambient Air Quality Standards (NAAQS) India: CPCB Limits for All 12 Pollutants]]></title><description><![CDATA[Complete guide to India's National Ambient Air Quality Standards (NAAQS) notified by CPCB. Get the legal limits for all 12 pollutants — SO₂, NO₂, PM2.5, PM10, O₃, Pb, CO, benzene, and more — with measurement methods.]]></description><link>https://www.apsed.in/post/naaqs-india-cpcb-ambient-air-quality-standards-all-pollutants</link><guid isPermaLink="false">69c0acea0160b7de3152cca8</guid><category><![CDATA[Air Pollution]]></category><category><![CDATA[Environmental Science]]></category><pubDate>Mon, 23 Mar 2026 03:26:53 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/c98da3_30d2a57442494ea5807b2d8a4d56c3c6~mv2.jpg/v1/fit/w_1000,h_713,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[What are Criteria Air Pollutants? The 6 Pollutants Regulated by EPA (with Standards)]]></title><description><![CDATA[What are criteria air pollutants? Learn the 6 pollutants designated by the US EPA under NAAQS — CO, Pb, NO₂, O₃, PM, and SO₂ — with their standards, averaging times, and why they're called 'criteria' pollutants.]]></description><link>https://www.apsed.in/post/what-are-criteria-air-pollutants-epa-naaqs</link><guid isPermaLink="false">69c0ab3218a3837b55bbacbe</guid><category><![CDATA[Air Pollution]]></category><category><![CDATA[Environmental Science]]></category><pubDate>Mon, 23 Mar 2026 03:00:33 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/c98da3_55f7dd1a5003494991d2bc47037366de~mv2.jpg/v1/fit/w_1000,h_719,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[How is AQI Calculated? Formulas, Sub-Index Methods, and Worked Examples]]></title><description><![CDATA[How exactly is India's Air Quality Index (AQI) calculated? Learn the 3 methods — the average formula, the 3-pollutant API, and the sub-index method — with the CPCB approach explained step by step.]]></description><link>https://www.apsed.in/post/how-is-aqi-calculated-methods-formulas-explained</link><guid isPermaLink="false">69c0a887f68fa4c22fbd4ad6</guid><category><![CDATA[Air Pollution]]></category><category><![CDATA[Environmental Science]]></category><pubDate>Mon, 23 Mar 2026 02:53:11 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/c98da3_048dd7c6cab0459795a0705408fb02fb~mv2.jpg/v1/fit/w_1000,h_710,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[What is AQI? India's Air Quality Index (0–500) Scale Fully Explained]]></title><description><![CDATA[What does an AQI of 150 or 300 mean? Understand India's Air Quality Index scale from 0 to 500, CPCB colour codes, health categories, and which pollutants are measured — explained simply.]]></description><link>https://www.apsed.in/post/what-is-aqi-india-air-quality-index-explained</link><guid isPermaLink="false">69c024f9be334c87583ea0a0</guid><category><![CDATA[Air Pollution]]></category><category><![CDATA[Environmental Science]]></category><pubDate>Sun, 22 Mar 2026 17:31:31 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/c98da3_a1d0137ae7914efcaa9f15ccf31b7077~mv2.jpg/v1/fit/w_1000,h_719,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[GATE 2027 Civil Engineering – Syllabus and Complete Guide | GATE CE 2027]]></title><description><![CDATA[If you are targeting GATE 2027 Civil Engineering (CE), this is your complete reference — official syllabus, exam pattern, expected dates, section-wise weightage, past papers, paper combinations, career paths, and preparation resources.]]></description><link>https://www.apsed.in/post/gate-2027-civil-engineering-complete-guide</link><guid isPermaLink="false">69bfd90ebe334c87583ddbb5</guid><category><![CDATA[GATE CE]]></category><category><![CDATA[GATE 2027]]></category><pubDate>Sun, 22 Mar 2026 12:16:42 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/c98da3_6aa83b779a364c068ef8a6535f0ad90b~mv2.jpg/v1/fit/w_1000,h_719,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[GATE 2027 Geomatics Engineering – Syllabus and Complete Guide | GATE GE 2027]]></title><description><![CDATA[If you are targeting GATE 2027 Geomatics Engineering (GE), this is your complete reference — official syllabus, unique exam structure with Part A and Part B, expected dates, paper combinations, career paths, and how to prepare - all in one place. ]]></description><link>https://www.apsed.in/post/gate-2027-geomatics-engineering-complete-guide</link><guid isPermaLink="false">69bfce5e60de372da577f143</guid><category><![CDATA[GATE 2027]]></category><category><![CDATA[GATE Geomatics Engineering]]></category><pubDate>Sun, 22 Mar 2026 11:39:32 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/c98da3_e9ef698b4a9c4f448a09b2c2eaa04586~mv2.jpg/v1/fit/w_1000,h_652,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[GATE 2027 Environmental Science &#38; Engineering – Syllabus and Complete Guide | GATE ES 2027]]></title><description><![CDATA[If you are targeting GATE 2027 Environmental Science and Engineering (ES), this is your one-stop reference — official syllabus, exam pattern, expected dates, paper combinations, and career paths, all in one place.]]></description><link>https://www.apsed.in/post/gate-2027-environmental-science-and-engineering-complete-guide</link><guid isPermaLink="false">69bfafce6e2d8139248eaff5</guid><category><![CDATA[GATE 2027]]></category><category><![CDATA[GATE ES]]></category><category><![CDATA[gate environmental science]]></category><pubDate>Sun, 22 Mar 2026 10:18:14 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/c98da3_cdb1e38f9603419283a69b3858992e70~mv2.jpg/v1/fit/w_1000,h_747,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[GATE 2023 Test Series for Geomatics Engineering | GATE GE 2023]]></title><description><![CDATA[Test series form an important part of the preparation for the GATE exam. A test series typically contains both subject and full-length tests]]></description><link>https://www.apsed.in/post/gate-2023-test-series-for-geomatics-engineering-gate-ge-2023</link><guid isPermaLink="false">632dc16aa0acaa867e1e7e63</guid><category><![CDATA[GATE Preparation]]></category><category><![CDATA[GATE GE]]></category><pubDate>Sat, 24 Sep 2022 12:30:06 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/3c085d_24edfe884d534db089a47ffe17077f4c~mv2.jpg/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[GATE 2023 Test Series for Environmental Science &#38; Engineering | GATE ES 2023]]></title><description><![CDATA[Test series form an important part of the preparation for the GATE exam. A test series typically contains both subject and full-length tests]]></description><link>https://www.apsed.in/post/gate-2023-test-series-for-environmental-science-engineering-gate-es-2023</link><guid isPermaLink="false">63241c8fee6054703bf798cd</guid><category><![CDATA[GATE ES]]></category><category><![CDATA[GATE Preparation]]></category><category><![CDATA[GATE 2023]]></category><pubDate>Fri, 16 Sep 2022 12:31:06 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/3c085d_06d441c32d0a4e10899c4cc799216ca6~mv2.jpg/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[GATE 2023 Test Series for Civil Engineering | GATE CE 2023]]></title><description><![CDATA[Test series form an important part of the preparation for the GATE exam. A test series typically contains both subject and full-length tests]]></description><link>https://www.apsed.in/post/gate-2023-test-series-for-civil-engineering-gate-ce-2023</link><guid isPermaLink="false">63204349e8760bb9e6506beb</guid><category><![CDATA[GATE 2023]]></category><category><![CDATA[GATE CE]]></category><category><![CDATA[GATE Preparation]]></category><category><![CDATA[GATE 2023 Civil]]></category><pubDate>Tue, 13 Sep 2022 12:31:03 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/3c085d_ac5345da86b3460ea4165e690757c31c~mv2.jpg/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[Important Tests on Cement | Lab and Field Tests on Cement]]></title><description><![CDATA[Cement is one of the most used materials in construction and therefore knowledge of cement testing forms an important part. ]]></description><link>https://www.apsed.in/post/important-tests-on-cement-lab-and-field-tests-on-cement</link><guid isPermaLink="false">63133972ff4590edd94f7a42</guid><category><![CDATA[Construction Materials]]></category><category><![CDATA[GATE Preparation]]></category><category><![CDATA[GATE CE]]></category><pubDate>Mon, 05 Sep 2022 12:31:04 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/3c085d_1deace4c554c48aca292622119259f7e~mv2.jpg/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[GATE 2023 Paper Combinations]]></title><description><![CDATA[GATE 2023 allows candidates to take two GATE exams in the same year. There are certain combinations of papers that are explained here.]]></description><link>https://www.apsed.in/post/gate-2023-paper-combinations</link><guid isPermaLink="false">63109bc0e857aa9fc49f168c</guid><category><![CDATA[GATE 2023]]></category><category><![CDATA[GATE 2023 Civil]]></category><category><![CDATA[GATE ES]]></category><category><![CDATA[GATE CE]]></category><pubDate>Thu, 01 Sep 2022 13:05:01 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/3c085d_736e8cf102194686be00f24146b12c7d~mv2.png/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[Important Tests on Pavement Materials | Tests on Aggregate]]></title><description><![CDATA[Pavement material testing comprises all the methods used to test the pavement materials for their specification.]]></description><link>https://www.apsed.in/post/important-tests-on-pavement-materials-tests-on-aggregate</link><guid isPermaLink="false">630ca740994db19d961415a4</guid><category><![CDATA[Transportation Engineering]]></category><category><![CDATA[GATE Preparation]]></category><category><![CDATA[GATE CE]]></category><pubDate>Tue, 30 Aug 2022 12:31:02 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/3c085d_b8f8c5c6974e4f5aa44231be80f054ea~mv2.png/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[Flow Through Pipes | Equivalent Diameter of Pipes in Series and Parallel ]]></title><description><![CDATA[Flow through pipes is a type of flow in which a fluid flows through a closed conduit. In these cases, fluid experiences certain resistance. ]]></description><link>https://www.apsed.in/post/flow-through-pipes-equivalent-diameter-of-pipes-in-series-and-parallel</link><guid isPermaLink="false">6308afefa90446d2039c63a5</guid><category><![CDATA[Fluid Mechanics]]></category><category><![CDATA[GATE Preparation]]></category><category><![CDATA[GATE CE]]></category><pubDate>Fri, 26 Aug 2022 13:35:35 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/3c085d_882e4bb8cfaf406ca9d85d10c725d5b4~mv2.png/v1/fit/w_732,h_542,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[Where to Practise Questions for GATE 2023 | Practice Question Sources for the GATE Exam]]></title><description><![CDATA[PYQs, Question banks, and Questions from books are important. Here, we will share details on where to find these for GATE 2023 preparation.]]></description><link>https://www.apsed.in/post/where-to-practise-questions-for-gate-2023-practice-question-sources-for-the-gate-exam</link><guid isPermaLink="false">6305e807d89216c636184b71</guid><category><![CDATA[GATE 2023]]></category><category><![CDATA[GATE 2023 Civil]]></category><category><![CDATA[GATE Preparation]]></category><category><![CDATA[GATE ES]]></category><category><![CDATA[GATE CE]]></category><pubDate>Wed, 24 Aug 2022 12:31:03 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/3c085d_f653c71dac9049588d7bc52ec5cbeaba~mv2.png/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[Extra Widening of Pavement | IRC Formula for Extra Widening ]]></title><description><![CDATA[The extra width of the carriageway required on a curved section of the road is called the extra widening of the pavement.   ]]></description><link>https://www.apsed.in/post/extra-widening-of-pavement-irc-formula-for-extra-widening</link><guid isPermaLink="false">630373338fdd39bc0c4c7b84</guid><category><![CDATA[Transportation Engineering]]></category><category><![CDATA[Highway engineering]]></category><category><![CDATA[GATE CE]]></category><category><![CDATA[GATE Preparation]]></category><pubDate>Mon, 22 Aug 2022 13:31:11 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/3c085d_7fd60e632ef043a49f3ea3880f04b38b~mv2.png/v1/fit/w_685,h_367,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[Rigid Pavement Design by Westergard's Method with IRC Recommendations]]></title><description><![CDATA[Rigid pavements are pavements that are made up of cement and concrete materials by virtue of which they offer flexural strength. ]]></description><link>https://www.apsed.in/post/rigid-pavement-design-by-westergard-s-method-with-irc-recommendations</link><guid isPermaLink="false">62f6265ed9e7a9112d772f26</guid><category><![CDATA[Transportation Engineering]]></category><category><![CDATA[Highway engineering]]></category><category><![CDATA[GATE Preparation]]></category><category><![CDATA[GATE CE]]></category><pubDate>Wed, 17 Aug 2022 12:31:08 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/3c085d_0279ed39558e42eea8424458645118e0~mv2.png/v1/fit/w_735,h_562,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[Length of a Summit Curve based on Sight Distance Criteria]]></title><description><![CDATA[A summit curve is a type of vertical curve having an upward gradient. The length of a summit curve is calculated based on sight distance. ]]></description><link>https://www.apsed.in/post/length-of-a-summit-curve-based-on-sight-distance-criteria</link><guid isPermaLink="false">62f3a03572b88fb3d8504946</guid><category><![CDATA[Transportation Engineering]]></category><category><![CDATA[Highway engineering]]></category><category><![CDATA[GATE CE]]></category><category><![CDATA[GATE Preparation]]></category><pubDate>Wed, 10 Aug 2022 13:20:33 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/3c085d_a9054ea872b541849ab136d4ac37a0b7~mv2.png/v1/fit/w_602,h_787,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item><item><title><![CDATA[Flexible Pavement Design | California Bearing Ratio Method with IRC Recommendations]]></title><description><![CDATA[Flexible pavements have negligible or low flexural strength. There are several empirical, semi-empirical, and theoretical methods to design.]]></description><link>https://www.apsed.in/post/flexible-pavement-design-california-bearing-ratio-method-with-irc-recommendations</link><guid isPermaLink="false">62ecda8e333c3c6721889711</guid><category><![CDATA[Transportation Engineering]]></category><category><![CDATA[GATE CE]]></category><category><![CDATA[GATE Preparation]]></category><category><![CDATA[Highway engineering]]></category><pubDate>Fri, 05 Aug 2022 13:09:11 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/3c085d_c33cc4e000424033a5d96b4cd491b8ef~mv2.png/v1/fit/w_787,h_267,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>APSEd</dc:creator></item></channel></rss>