Publications related to Natural building

Hybrid organic/metal-oxide shells on semiconductor nanocrystals via colloidal atomic layer deposition

The escalating energy demand and the imperative necessity to reduce the carbon footprint require transformative approaches to energy conversion. Materials chemistry plays a pivotal role in addressing these global challenges by developing novel materials fo ...

EPFL2024

Reuse of Load-Bearing Timber Elements - Case Study of a Lookout Tower in Lausanne, Switzerland

Corentin Jean Dominique Fivet, Jonas Warmuth, Edisson Xavier Estrella Arcos, Julius Natterer, Benoît Pascal Kälin

The construction industry is jeopardizing Earth’s environment; current mitigation efforts do not suffice; and additional sustainable strategies are required. One such strategy consists of reusing structural building elements over multiple service lives. In ...

Curran Associates, Inc.2023

Asymmetric Construction of α,α‐Disubstituted Piperazinones Enabled by Benzilic Amide Rearrangement

Jieping Zhu, Hua Wu, Yuping He

An unprecedent asymmetric catalytic benzilic amide rearrangement for the synthesis of α,α-disubstituted piperazinones is reported. The reaction proceeds via a domino [4+1] imidazolidination/formal 1,2-nitro- gen shift/1,2-aryl or alkyl migration sequence, ...

Wiley-VCH Verlag GmbH2023

Synthesis of propargyl silanes from terminal alkynes via a migratory Sonogashira reaction

Jérôme Waser, Mikus Purins, Lucas Antoine Théo Eichenberger

Herein we report a mild synthesis of propargyl silanes from terminal alkynes. We exploit a bromonaphthyl-substituted silane as a silylmethyl electrophile surrogate, which participates in a Sonogashira reaction after an aryl-to-alkyl Pd-migration. Twenty-se ...

Royal Society of Chemistry2023

Spatial Distributions of Diarrheal Cases in Relation to Housing Conditions in Informal Settlements: A Cross-Sectional Study in Abidjan, Côte d’Ivoire

Jérôme Chenal, Vitor Pessoa Colombo, Jürg Utzinger

In addition to individual practices and access to water, sanitation, and hygiene (WASH) facilities, housing conditions may also be associated with the risk of diarrhea. Our study embraced a broad approach to health determinants by looking at housing depriv ...

2023

Building structures made of reused cut reinforced concrete slabs and walls: A case study

Corentin Jean Dominique Fivet, Maléna Bastien Masse, Nicole Widmer

Reuse of reinforced concrete (RC) components reduces construction’s environmental impacts and waste. Rather than crushing the concrete of an obsolete structure, its components are saw cut and later reassembled in a new structure. The theoretical feasibilit ...

CRC Press2023

Expert perceptions of game-changing innovations towards net zero

Marc Vielle, Sigit Pria Perdana

Current technological improvements are yet to put the world on track to net-zero, which will require the uptake of transformative low-carbon innovations to supplement mitigation efforts. However, the role of such innovations is not yet fully understood; so ...

2023

Recent progress in alkynylation with hypervalent iodine reagents

Jérôme Waser, Eliott Hugo Joran Le Du

Although alkynes are one of the smallest functional groups, they are among the most versatile building blocks for organic chemistry, with applications ranging from biochemistry to material sciences. Alkynylation reactions have traditionally relied on the u ...

Royal Society of Chemistry2023

Harvesting the fragment-based nature of bifunctional organocatalysts to enhance their activity

Rubén Laplaza Solanas, Anne-Clémence Corminboeuf, Simone Gallarati

Bifunctional hydrogen-bond donors/amines are commonly encountered organocatalysts in asymmetric synthesis. Existing computational tools do not take full advantage of their modularity to suggest tailored designs because they generally rely on evaluating the ...

2022

Activation of aminocyclopropanes via radical intermediates

Jérôme Waser, Mingming Wang

Aminocyclopropanes are versatile building blocks for accessing high value-added nitrogen-containing products. To control ring-opening promoted by ring strain, the Lewis acid activation of donor-acceptor substituted systems is now well established. Over the ...

Royal Society of Chemistry2022

Influence of Ambient Air Pollution on Natural Ventilation Potential in Europe

Dusan Licina, Evangelos Belias

When designed and operated adequately, natural ventilation (NV) can improve the buildings' energy efficiency and indoor environmental quality. There is a plethora of factors that limit the effectiveness of NV, such as the climate, surrounding buildings, no ...

AMER SOC HEATING, REFRIGERATING AND AIR-CONDITIONING ENGS2022

Design considerations for robotically assembled through-tenon timber joints

Yves Weinand, Julien Gamerro, Nicolas Henry Pierre Louis Rogeau, Pierre Latteur

This research investigates the robotic assembly of timber structures connected by wood–wood connections. As the digitization of the timber construction sector progresses, digital tools, such as industrial robotic arms and Computer Numerical Control machine ...

2022

Blind predictions of shake table testing of aggregate masonry buildings

Katrin Beyer, Igor Tomic, Andrea Penna

In many historical centers in Europe, stone masonry is part of building aggregates, which developed when the layout of the city or village was densified. The analysis of such building aggregates is very challenging and modelling guidelines missing. Advance ...

2021

The future of IEQ in green building certifications

Dusan Licina

Although indoor environmental quality (IEQ) and human health have been on the agenda of the green building industry, a new emphasis is being placed on building features that explicitly promote the experience of occupants. However, evidence of the performan ...

2021

New Strategies for the Functionalization of Alkenes Exploiting Tethering Chemistry and Ring Strain

Bastian Antoine Rodolphe Claude Muriel

Amino alcohols, cyclopropanes and nitriles are privileged structural motifs found in the scaffold of natural products and bioactive compounds. In addition, they are versatile building blocks in organic chemistry. The development of new and increasingly eff ...

EPFL2021

Critical review of standards for indoor thermal environment and air quality

Dolaana Khovalyg

Quality of the indoor environment has become an important parameter to account for in new and existing buildings due to the increasing number of people spending most of their time indoors. Generally, the design and evaluation of indoor environments in buil ...

2020

Biochemical conversion of biodiesel by-product into malic acid: A way towards sustainability

Edgard Gnansounou

Crude glycerol, one of the ever-growing by-product of biodiesel industry and is receiving the closest review in recent times because direct disposal of crude glycerol may emerge ecological issues. The renewability, bioavailability and typical structure of ...

ELSEVIER2020

Blind predictions of shake table testing of aggregate masonry buildings

Katrin Beyer, Igor Tomic, Andrea Penna

In many historical centers in Europe, stone masonry is part of building aggregates, which developed when the layout of the city or village was densified. The analysis of such building aggregates is very challenging and modelling guidelines missing. Advance ...

2020

Design guidance from a Data-Driven LCA-Based Design method and tool prototype

Marilyne Andersen, Emmanuel Rey, Thomas Bernard Paul Jusselme

As of 2020, every new building in the European Union will have to reach the nearly Zero Energy Building (nZEB) performance. However, building nZEB will not be sufficient to reach carbon neutrality in 2050 as required by the last IPCC report: indeed, even n ...

INT BUILDING PERFORMANCE SIMULATION ASSOC-IBPSA2019

Hardening acceleration/hardening retardation composition for building materials

Paul Bowen, Abhishek Kumar

Provided herein is a composition for use as a hardening regulator, e.g. hardening accelerator or hardening retarder, for building materials, as well as methods for producing thereof. The composition is characterized by a biphasic nature in which solid calc ...

2018